Quality to reasonable prices!

Index:

• Cage Systems (Pontoons, Cages, Nets)
• Tank Systems (Tanks, Filters, Heaters)
• Aeration Systems (Injectors, Blowers, Diffusers)
• Monitoring Systems (Testers, Meters, Sensors)
• Incubation Systems (Troughs, Boxes, Jars)
• Feeding Systems (Spreaders, Blowers, Shakers)
• Transporting Systems (Graders, Scales, Pumps)
• Processing Systems (Filleters, Skinners, Smokers)
• Freshwater Fishes (Chemicals, Consulting, Publications)

Netcage Systems

MODULAR FLOATING DOCK SYSTEM for aquatic sports and aqua culture

25 years experience in "state of the art" flotation engineering worldwide, together with cutting edge technology and the most advanced production techniques are the base for the new, extremely versatile "Pontoon Building - Block System". By utilizing the friction co-efficient achieved by independently controlled flooding of the modules we have refined this system to provide not only the most stable floating platform available, but also a high load capacity, which can also be combined with a fender-sidebar system.
The individual modules are easy to handle (weight: 6.2 kg) and have a very high load capacity of 360 kg/m2 (=75 lbs/sq ft). They are made of a high-quality synthetic, UV-stabilized and anti-static material (green or blue), which is extremely resistant to the elements. Individual blocks measure 50x50x50 cm (1.65x1.65x1.65 ft) and the standard freeboard is approximately 40 cm. Blocks are easily assembled (with an assembling wrench) by joining the connecting lugs with bolts that give a secure and stable connection.
These building blocks can be assembled to meet any desired layout or dimensions, and can be used to replace or extend existing pontoon systems. This seawater- and acid-resistant system requires no maintenance or cleaning and is extremely durable. It can be utilized throughout the year or the modules can be stacked and stored. Unlike closed floats, this system does not blow up in the sun and is resistant to attacks from Teredinidae.
Unlike conventional wooden floats, the pontoons are made of a skid-proof material, and will not rot or develop sharp edges, or expose rusty nails etc. The "Maritime Technic - Pontoon System" contributes to water purity and is aesthetically pleasing. It has lugs (ears) along the sides where different accessories can be fitted and anchoring systems attached.
Swimming ladders safety rails, anchor fastening and and boat -mooring-eyes are the main accessories, with options such as side screws and bars as well as fenders, ropes and anchors. If needed, access ramps and gangways can be produced to the customer’s design. For marinas electricity distributors (w/wo illumination) and water supply-systems are available.

More Info and Photos

CIRCULAR NETCAGES for all conditions

We supply a wide range of single, double and triple ring cage collars, using black high density polyethylene (HD-PE 100) pipes in sizes from 200 to 500 mm Ø, optional mounted with either dip galvanized steel or injection molded plastic brackets (mounted usually every 2-3 m). All build with heavy gauge handrail and upright pipe (110-160 mm Ø) to resist deformation. The tailor-made circular cages with a diameter from 10-60 m (32-189 m circumference) can be prepared for all types of weather and sea conditions from sea bay to offshore sites, for industrial farming of various fresh- and seawater fish species (i.e.: Kingfish, Cobia, Tuna etc.). A safety chain inside the outer pipe ring and dividing plates welded inside the inner pipe ring, are available for safety reasons. A full circumference walkway decking is available optionally. A bird net stand, a dead fish collector and sinker tube pipe are available as accessories. The cage pipes are shipped in parts and are welded on site. The following diameters are recommended:

Square cages of any size we produce with our
Maritime Technic - Pontoon System

ILLUMINATED NET CAGES for the fingerling production with natural zooplankton

20 years' experience in the field of global plankton research and fingerling production with natural plankton and years of tests under different environmental conditions in marine and fresh water, are the basis of the new "UWG- Solar cage system". The production method is based on plankton feeding in the natural environment like: lagoons, bays, fjords, lakes and large ponds, by means of attracting the organisms using a lamp located in the center of fine meshed submerged nets. Mainly Copepods and Cladoceres - but also a variety of other zoo plankton are photo sensitive and steadily swarm into the cages towards the light source. The net cages 2x2x2 m (8 m3) are manufactured from highly resistant mono filament polyester fabric (with mesh sizes 0,3 to 1,8 mm), is fitted with a zipper for easy access and a conduit for the electric cable. The net cage is stretched onto a strong stainless steel or aluminum frame. An efficient solar generator is supplied for remote site operation. An electrical transformer can be supplied in order to reduce voltage to safer levels for use with water. Depending on the zoo plankton populations, the fish stocking density (from the fry stage to fingerling size of 5 cm length) can come to 5.000 Ind./m3 and survival rates of more than 90 % have been achieved with various marine and freshwater fish species.
Operation and maintenance is limited to: the functional control of the system, a periodic cleaning with a portable high pressure cleaner, in order to prevent clogging effects caused by detritus, algae and faces, and the observations of the plankton development in the location. The system is environmentally safe since: no feeds or fertilizer are applied, the construction materials are inert, and the plankton consumption is minimal and does not affect the natural stocks.

POLYMER COATED POLYESTER NETS for cages

This special polymer (PVC) coated polyester (PET) net is very strong and stable, but also flexible. The nets are 100 % stronger than conventional nylon nets, are highly UV-resistant, suitable for seawater and need no antifouling. They need 90 % less maintenance and have fewer escapes than nylon nets and save a lot of total operation costs. The live-time of this nets with continuous use in fresh water is up to 30 years. The material is available on coils with a width of 3,6 m with a mesh size of 5 mm, and 5 m wide with a mesh size of 20 to 40 mm. With a weight of 450 to 780 g/m2 the cages need no lead sinkers. We deliver finished cages or also the material on coils.

All data on average (+/- 10 %).

NET MATERIAL for cages and fishery

The production is based on a complete process, from the raw material, passing the different manufacturing phases like: matching, weaving, cutting and packing. Our aim is to assure a quality product to the customer. Woven in high resistant polyamide (nylon) or polyester, all our nets are machine sewed with double rows of stitching. UV-antifouling protection or coloration, on request. The finished nets are delivered in any shape or size with a mesh size of 4 to 30 mm, or only the net material itself.

Seine Nets in two designs:
Seine net with bag - consisting of two wings and respective bag in between, for the catch of fishes in lakes, rivers and ponds etc.
Seine net without bag - consisting of a well vault single wall, for the harvest of fishes in ponds, raceways and tanks etc.
Both nets are complete ready to use mounted in strong rope with foam floats and lead sinkers.

Gill nets in two versions :
Single or triple sheet gillnets with a mesh size of 6-150 mm, in various heights and lengths.
Both gillnets are available loose or mounted ready to use with lead and float line.

Trap Nets in two outfits:
Fish traps - with one troth and three galvanized iron rings, as well as two wing nets each 1,5 m long.
Fish bags - with two troths and five iron or plastic rings, as well as two wing nets each 2,0 m long or a 3 m long guide net.
Both nets are complete ready to use. Longer wing or guide nets with floats and sinkers are possible.

Cast Nets in two arts:
Traditional Art - the lower line with harvest bags, which catch the fish.
Yugoslavian Art - the lower border will be formed to bags by ropes during lifting.
Both nets are complete ready to use and have a circumference of about 7 m, a height of approx. 1,7 m and a mesh size of 11 mm as standard.

Scoop Nets in two forms:
D- or O-formed strong, corrosion free scoop frames (wide 40-70 cm) with protection and preparation for handle.
Both nets are complete ready to use mounted with net bag (mesh size 4-20 mm), and a handle (length 1,3 m) from hard-wood as accessories.

We deliver also other nets in various sizes.

PRECISION CLOTHS for aquaculture and hydrobiology

This fabric program includes precision sieves of different material strengths and offers a narrow mesh grading between 20-2000 micrometer and therefore fulfills all requirements of today's aquaculture and hydrological needs. Appropriate sieve fabrics are offered per running meter and as standard or customized products, such as filter-, dip-, hatching-, cage- and plankton-nets.
In Austria a catch of zooplankton for the production of fry and fingerlings is commonly practiced since more than 50 years. During the last years several important optimizations are archived allowing a better net construction and easy catching. With appropriate designed plankton nets, harvests of several tons per day can be achieved. Thanks' to this Austrian development of special sieve-net-systems, it is possible to grad the plankton in 3 different size classes during the catch. The result is the correct plankton size for all development stages from fish larvae to fry and fingerling. An expensive and complicated indoor-production of prey organisms (such as: Algae, Rotatoria, Artemia, Daphnia etc.) is not necessary.

SHADING SHEETS AND NETS to protect fishes

Shades and nets are made from UV-stable polyethylene material with a shading density of 30-85 % to protect fish and ponds from light and birds. The sheets which let water (from rain) to drain off, are available on coils from 1,5 and 3,0 m width and can be manufactured with extra strong hem and eyes. For pricing always the width of the coil is calculated.

We deliver also bird protection nets with a mesh size of 15 - 150 mm.

TRAPS made of plastic material

This easy to handle and maintenance free plastic traps have been tested in practice and are suitable for both professional and sport fisherman. Features such as a new shape and correct coloring are the result of fishing expertise's. A favorable price/performance rate ensures highest economy in use. Of course the traps are saltwater and corrosion resistant and also resistant to crabs and other pests. This traps (with exchangeable components) have an inlet opening of approx. 42 cm and an integrated bait basket in the closed end cap. The traps are specially suitable for catching eels, but can also be used for other fish species as well as crayfish. This traps are delivered complete with plastic covered iron spits (12 mm Ø) for submerging, which guarantee that the trap is always positioned with the upper closed side on top, which in turn created a protection shelter for the animals.

Eel-trap: 1-throats, approx. 1,0 m long, weight 2.4 kg
Eel-trap: 2-throats, approx. 1,5 m long, weight 4.2 kg
Crayfish-trap: 2-throats, approx. 0,6 m long, weight 1.0 kg

ALUMINIUM BOATS for fisheries and watersports

This multi-purpose boats are made of 1-3 mm thick seawater resistant aluminum, welded with modern technologies (WIG-Argon und Plus-ARC) and need no coating or antifouling. The integrated floats secure this boats are unsinkable.
As accessories the following is available: Stand with steering, Build-in-tank, Electro-outfitting, Swimming ladder, Reeling and Persenning etc.
The smaller recreational boats Type A (from AlMg3) are made in multi parts and can be divided for transport (to 125x135x55 cm) or also extended on demand by additional body modules. They are verified by Lloyd's Register in Hamburg and have the EU-conformity certificate (CE-Module-D).
The larger working boats Type C (from AlMg4,5Mn) are made in single parts. They are verified by Lloyd's Register in Hamburg and have the EU-conformity certificate (CE-Module-C).

INFLATABLE BOATS for fishery and recreation

This well designed and large dimensioned inflatable boats are build from a very strong (blue-grey) plastic material, according to requirements of todays customer preferences and use. The good quality workmanship and materials guarantee security and longlifety, also in seawater. The large diameter of the hose, the reinforced heck plates and the keel forms, allow the boats even with minimal motorization and low speed, good gliding, high floating capacity and enormous stability. Security and safety is provided by the bars with broad profile on the sides and keel, by the valves situated inside, as well as by the security and holding ropes on top. The sturdy handles situated outside and the self lenting valve inside allow easy handling and working.
The models S of the "Sport Serial" (excl. 200 S) are fitted with a wooden floor with aluminum frame (aluminum floor on request), and strong switchable rowing supports with stackable paddles from aluminum. A wooden bank with fixing possibilities, holders for the persenning, bag and reparatory sets are standard outfits.
The models P of the "Professional Serial" are fitted with a fixed bottom hull made from glassfibre reinforced polyester with deep V-formed keel, an integrated driver stand with reeling and window, as well as single seat in the middle and double bank in the back. A selflenting anchor box and closable storing boxes are standard outfits.
Packing bags, heck wheels, bathing ladders, seat banks (also inflatable) etc., are available as accessories.

ELECTRO MOTORS for boats and pontoons

For boats, an electro motor is practicable for up to 9 m total hull lengths. Electric motors have, compared with petrol motors, different turning moments, which allow to use electric motors with relative low powers. Longtime experiments have proven, that the required power relation (electro to petrol motor) can be 1:2.0 to 2.5, if the petrol motor was not over motorized for the boat and the use.
All models have a compensated row motor, which coiling compensation optimizes the energy usage and increase the output of the motor, specially at higher turns. The casings as well as all supports are made from marine aluminum (GalSi5Mg to DIN 1725, pp. 2), which is corrosions and seawater proof. All other materials incl. all screws are made from stainless steel. The ball bearings are made for long operation and live and the seals of the bearing are made form seal rings. All parts are covered by plastic or special paintings for additional protection. Motor and motor casings are also painted with antifouling. All parts are built with high precision and each motor will be tested to electric performance.
The outboard-shaft models have a weight of 19-21 kg and are delivered with integrated cable, switch and fuse. They are ready to use and just have to be mounted on the heck and connected with the cables to the battery. Available in 3 power sizes (500, 800 or 1.400 Watt) with 4 steps (2 front and 2 back) and with different shaft lengths for various boat types.
The inboard-flange models have a weight of 15-35 kg and are delivered with complete cables, switch and fuse. They must be installed on the boat and are fitted with a pin, where lenking ropes can be fixed. Available in 4 power sizes (800, 1.400, 2.000 or 3.000 Watt) with 4-6 steps (font and back).
A foldable propeller, which brings the wings into a position so that they doe not turn if the motor is not used, is available as accessories.
Additionally, special batteries for long time use with high cycle stability, battery loaders, and (from 36 V on) a steeples motor regulation is available.

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Recirculation Systems

The requirement for seafood continually rises worldwide, and product is continually becoming more scarce. Aquaculture is a young, innovative part of economy with high growth rates and secure prospects. The future of fish production requires water to be used as economical as possible, and environmentally safe removal of waste products with lowest possible energy consumption. Demands of environment legislation reduce possibilities of open water fish production more and more. Already existing fish farms are confronted with directions for purification of their waste waters.
This accelerates the development of intensive, water saving systems for fish production which do not depend upon natural environmental factors. Production in a closed water systems offers more a compact growing environment for fish, low shared personal costs and good profits.
In such systems the waste water, which is loaded with metabolic by-products, is recycled through biological and physical purification and more than 90 % re-used. Through improvement of the re-circulation and filter technique we are able to offer an very efficient, easy and cost effective system for fresh and seawater. Risk minimization, process control and fish health are factors considered in our designs and re-circulation systems are produced in module-construction. Each module is an autonomous working system and is therefore the water is not transferred between modules. Depending on system size and customer wishes our systems will be supplied with modern measuring, regulation and security technique and working accessory. Depending on the requirements (production capacity, conditions and species) we offer generally two systems:

RECIRCULATION SYSTEMS for nursing and holding

The modules for nursery and holding are available for a yearly production-capacity of 1-2 t (125-250 kg standing crop) and consists of 2 square and 1 filter tanks with the needed technique and equipment. The water from the fish pools are cleaned through a particle filter to remove suspended solids prior to bio-filtration. The bacterial settlement for nitrification will develop on the packages of the reactor, mud will be removed through the current. Our bio-reactors have the gigantic settlement-area of over 900 m2 per cubic meter filter material and therefore we need only very small filter units. Through the introduction of fine air bubbles through a special aeration- and lift construction our systems work without pumps and therefore require less energy thereby reducing costs. Through compact construction, our systems can be installed any time and anywhere without rebuilding or extension expense. Aquaponic kits or hydroponic sets are available optionally.

RECIRCULATION SYSTEMS for the intensive production

The modules for production are available for a yearly production-capacity of min  25 t/year (standing crop 10 t) onward and allow our customers to get familiar with the technique and topic without high risks. The water from the fish pools are cleaned through a drum filter to remove suspended solids prior to bio-filtration, where the nitrification process and the aeration with oxygen takes place. From there the water is pumped to the fish tanks, witch could be adapted to customer wishes in form, size and number. The use of UV- or ozone is possible too. This system is available for all fish species (also salmonids).

Example-Layout

HOLDING AQUARIA for fish and seafood

An aquarium should be seen as a complex grouping of elements functioning synergistically to maintain constancy of environmental characteristics, countering any variation whatsoever and simulating as far as possible the whole biological cycle that is present in nature and indispensable to the live of the aquatic animals. This professional range of aquariums are designed for holding of live crustacean or fishes at a working temperature of 10-30 °C and consists of double glass walls in which the two layers of glass are separated by a dry air gap. The aquaria are delivered as complete assembled units with ALU-frame and PVC-panels (70 cm high, color: black) with cover and lights (IP67), external mechanical/biological filter, circulation pump and chiller with thermostat, as well as cable and plough. Energy consumption 680-1200 W.  The two larger systems are also available with two-compartment aquaria. Single wall glass aquaria (200-600 l volume) with stainless steel frame, on request.

Single wall glass aquaria (200-600 l volume) with stainless steel frame, on request.

HOLDING TANKS for fishes, crustaceans or mollusks

This isolated (PE) polyethylene tanks in blue color  and cover are especially suitable for the holding of live fishes, crustacea or mollusca (like: crabs or oysters etc.) in fish or seafood restaurants, mongers, wholesalers etc. The compact units are delivered complete with integrated biological filter (calcareous seaweed) with pH-buffer effect below, and mechanical pre-filter, titanium-chiller (R134) with digital display and thermostat, recirculation system with pump, injectors, valves and PVC-pipes behind or on the side of the units. They are build for fresh and seawater, an electric connection of 230 V/50 Hz and a working temperature of 0-30 degree C. The electric consumption is about 0,5-1,0 kw/h, depending on model and temperatures. For mollusks, an UV-C lamp can optionally be integrated in the cover. The 3 larger tanks (dimensions ±2 %) with equipment on the side (+ 60-70 cm long) are instead the cover, optionally available with a 50 cm high double-walled glass-aquaria (approx. 200 to 400 l) incl. protein skimmer (+ 10-12 cm high).

The numbers mentioned in the types are the average dimensions of the products in mm (+/- 20 %).
Form (inside): K = Cross, X = Double cross, W = Wave, L = Lamellae, R = Ribs.

This compact (CE-certified) heating and/or cooling systems can be used for various liquid media (also seawater or foods) and are very save and secure in operation through the missing direct contact to the media. An electronic control via a high precision thermostat and the continuous display of the temperature via a digital thermometer allow an easy and exact control of the temperature. The min. flow is 500 l/h up to type 2000 and 3000 l/h from type 3000 onward (max. 1 bar). An ecologic cooling gas (R290 resp. R134a or R410a) and a low power consumption are features of this transportable and easy to install systems. The standard connection is 230 Volt 50 or 60 Hz. Systems with integrated UV-C System, higher capacity or other voltages are possible on request.

Capacity (0.5 W/l) in liter water volume at 5 °C temperature difference from ambient air to water (+/- 10 %).

Ultraviolet light (UV) destroys microorganisms (like: virus, bacteria, fungus, parasites, algae, etc.) by changing their genetic information (DNA), but does not produce residual or hazardous by-products, nor does it affect the taste, odor or color characteristics of the treated water. It is light with very high energy levels and wavelength of 200-400 nanometer (nm). The most effective ultraviolet light for disinfection is UV-C (200-280 nm), specially with a wavelength of 254 nm.
The heart of the UV systems are high-performance lamps (low pressure technology) which provide a stable UV output through a wider temperature range (1-45 °C). This special lamps show higher degrees of effectiveness and stability than other conventional lamps. They also exhibit a high UV power output (up to three times more than competitive low pressure lamps) and long operating live (9,000 h), resulting in decreased overall costs. The efficient lamps have a high UV emission in the area of the effective wavelengths (254 nm), that makes it possible to destroy up to 99.99 % of all pathogens in water. To further increase efficiency, reliability and service lifetime, electronic power supplies (ballasts) for the lamps where developed. In addition, the new electronic ballast replaces several components required in conventional systems, reducing overall electrical cabinet size and heat transfer requirements.
By studying various reactor geometries with respect to the UV intensity distribution and hydraulic characteristics (0.5-6.0 bar), specific reactors types in stainless steel (AISI 316 or V4A) with 1-16 lamps where developed to provide effective disinfection while minimizing overall power requirements. Our systems have a modular design, which enables us to draw up solutions that are specified to our clients' needs in all areas of ultraviolet disinfection for up to several m3/h. This systems are characterized by their high disinfection performance, combined with compact construction and low energy consumption (220-240 V/50-60 Hz).

Capacity for drinking water with 98 % transparency at 400 J/m2, if the flow is doubled the dose is halved (enough for fishes)!

This UVC submersible emitters acts in order to sterilize water in pipes, canals, tanks and ponds etc. The diving emitters are made of stainless steel and accomplished as watertight. The (30 mm diameter, 25-155 cm long) tube of the diving lamp is sealed up (IP68) and screwed in the stainless steel (AISI 306 or V4A) case. The unit can be assembled or retrofitted with few movements. The diving emitter gets fixed by spring terminals on a stainless steel fixture (weight approx. 0,4-0,8 kg). The pre-switch electronics (230 V), properly attuned to the emitter, is included in the delivery and integrated in a switchboard (weight approx. 2 kg). Consequently an access or function control during the operation of the unit are warranted. The fuse protection by a GFCI ground fault circuit interrupter is necessary. The lifetime of high-power radiation (Quicksilver or Amalgam) is 16.000 h - quality you can rely on. The 3 m cable between the lamp and ballast can be extended on request on 6 or 9 m. Simply installation and maintenance in existing plants and pools. The watertight emitter can be mounted with a mounting plate on the wall or bottom or floating or hanging without any plate.

Algae are problematic in many water areas and can create huge problems and high costs in industry, agriculture and other fields where water is used. Algae also make ponds and pools to ugly holes and can settle on boat hulls - where expensive antifouling coatings are necessary. This digital ultrasound devices (100-250 V/50-60 Hz AC or 12-24 V/1,5-2,0 A DC) send to the water (pond, pool or lake) special ultrasonic sound waves in periodic time scales trough the transducer in an angel of 180° on the front side. The wave length is depending on the type of the device and the mentioned distances are based on average values which can vary according to local circumstances, like water quality and water plants etc. In every algae the is a microscopic liquid bubble called vacuole. Our digital ultrasound device force that to swing which burst and finally kill the algae. But this is specific to different algae species. Single cell algae are killed after a treatment of 7-10 days, but filamentous algae need a longer treatment and die after 3-7 weeks. In which time the water will get clear depends also on the biological balance in the water. But also the quality and capacity of the eventually installed filter plays an important role. Additionally, with the ultrasound also the biological film (which builds up as sludge on the bottom or wall) in your water will be reduced and remove the base for many diseases pathogens like fungi or bacteria etc. The created ultrasound are not to hear for humans. If the device is in operation you may hear just a little ticking. But some other animals like dogs can hear it and may stay away from the device. Other is the whole with fishes, which some customers report prefer the ultrasound and stay nearby may because their skin is cleaned from parasites. Fishes feel not only better but also grow faster and are healthier with the ultrasound device.

This injectors are one of the best and most advanced aeration systems worldwide, and also suitable for large ponds. They work with an for endurance run produced, maintenance free, turnable, submerged (also seawater resistant), motor in different power sizes (0.75-1.50 kw (1.0-2.0 HP) 230 or 380 V/50 Hz). The rotating propeller (2800 r.p.m.) produces an adjustable current, through which air drawn from the surface and formed into fine evenly distributed bubbles.
The diffused air aerate from the bottom up and the circulation created from the fine bubbles displaces the surrounding water, thus breaking up stratified water areas. This constant surge forces the pond to turn over, bringing cooler bottom water to the surface, where it picks up additional oxygen from the atmosphere. Therefore the dissolved oxygen is always as high as possible. Through the eutrophication process (of faces and feeds) there is usually oxygen deficit at depth, therefore this system works to an adjustable depth and introduces the oxygen where it is needed, not only on the surface. If submerged, pure oxygen instead of air can be introduced with exact dosage. Long contact time of the fine bubbles in the water, ensures also this system is very effective. Depending on power and depth, the air flow rate is up to 35 cubic meter/hour and the oxygen introduction up to 3 kg/h/kw. At an oxygen content of 6 mg O2/l at beginning, one 1.0 HP unit in use with air, introduce over 0.32 kg O2/h which is the oxygen demand for over 2600 kg (table sized 250 g) trout at a water temperature of 10 °C, for approx. 1000 kg at 20 °C or up to 3000 kg of other species.
Depending on installation, depth and current, sediments can also be cleaned. If the aerator is positioned near the water surface it also acts as an ice clearing machine in winter. Strong circulation also eliminates pond stratification and organic matter deposition. Finally thanks to the floatation phenomenon (foaming), this aerators make it possible to remove excess algae proliferation, colloidal substances, mud and any other suspended particles and improve water quality. With this proven system, all variants of aeration, current creation and oxygenation are possible. These proven aerators are supplied complete with motor, supports, float kit and propeller protection fingers. They are lightweight compact systems ( 21 kg), and very easy to install.

This "ECO" injector is a new developed static aerator for the water inlet pipe (1 ") in tanks, raceways and small ponds, that works hydraulically and has no moving parts. It is designed to ensure cost-effective use of any viable water source. For degassing, aeration, oxygenation and dosing with chemicals (thereby avoiding the slightest wastage and maximizing efficiency). In enriching the water with air or pure oxygen, this aerator can create good circulation with a lesser amount of water than is usually supplied, with consequent energy savings. It works hydraulically (from 0.2 bar and 0.4 l/sec. on) exploiting the act the water passing through it at high speed (achieved by means of suitable flow rates and pressures with the special 3 interchangeable nozzles (for approx. 30, 50 or 100 liter/minute) and creates a great pressure drop and consequently a tremendous suction capacity, without introducing additional energy. If no pressure is available it can be connected to any pump.

This propeller aerator was specially developed for intensive production of fish in tanks, raceways and ponds. The maintenance free, heavy duty, motor (230 or 380 Volt) has a mounted propeller which allows a high water circulation and has an oxygen transfer rate of up to 1.25 kg/kwh or with 6 mg/l at beginning approx. 0.4 kg/kwh. The small float size (70 x 70 cm) as well as the compact and lightweight system make it fast and easy to install.

As accessories a protection basket (with 4, 7 or 12 mm grating) is available, which save smaller fish for injuries. Additionally a water conveyer for the suction of deeper water can be build to specific depths.

This paddlewheel aerators widely used all over the world, special in intensive ponds and raceways. They are available with 2-6 paddle wheels, in different power ratings from 0,75 to 2,20 kw (for 220 or 380 Volt) and have a weight of 80-120 kg. The oxygen introduction is up to 1.5 kg/kwh or with 6 mg/l at beginning approx. 0.5 kg/kwh. Wheel and frame are made of steel, the paddles from special plastic material and the H-formed floats from thick UV- and ozone resistant plastic.

Aeration and/or oxygenation is specially of economic importance in intensive farms. At this completely new developed systems all possible failures and defects of other known products have been removed. The systems have been tested under hardest conditions and have a very high efficiency, with the same time low investment and operation costs. The oxygen introduction is usually about 1.6 kg/kwh. There are no bearings of the wheel (100-130 r.p.m) necessary and also no couplings and discs, this reduce friction lost and increase the efficiency and also reduce the possible parts which could become defect with time. A very long self live and high efficiency is also guaranteed through the worm-gearing. The motor is specially sealed against moisture. Paddles, wheel and frame are made of stainless steel, the floats from thick UV- and ozone resistant material. The Paddlewheel Aerators are available in different power ratings (180, 250, 370, 550 and 750 Watt) and have dimensions of approx. 1.5 x 1.6 x 0.6 m (LxWxH) and a weight of 30-70 kg.

To use this paddlewheel aerators also with pure oxygen instead of air, as accessories a special oxygen cover is available. The special formed cover inside guarantees that no oxygen (feed up to 15 l/min) disperse or waste to the surface, after the water leaves the aerator. As there are no seals necessary at the bearing of the wheel, also this guarantees that there is no oxygen wasted and thus this makes the system very effective too. The efficiency is up to 90 % and the oxygen introduction up to 2-3 kg O2/h.

This professional, extremely durable and effective diffusers are suitable for the live fish transport and for emergency purposes with pure oxygen. The approx. 1000 pores/meter arranged in 6 rows, of the special oxygen hose open only if oxygen is supplied and close again if the supply stops. Thus, pore blockage is prevented and the diffuser is always ready to operate. An uniform bubble size due to the straight hose mounting in a stainless steel frame are main features of this professional diffusers. The sturdy hose connection is 6 mm as standard (and is also available in 9 mm if preferred).

Other diffuser sizes and forms on request. For the self production of diffusers we deliver also just the diffuser hose per meter (18-19 mm inside and 24-27 mm outside diameter) as well as end pieces with connector and the pressure hose per meter (6 mm diameter).

The fine pored ceramic tubes allow to diffuse the air in fine bubbles. The diffusers should be installed in the same depth, but as deep as possible below the water surface. The floating cross diffuser is placed on the water surface in the center of the tank or pond and fixed with a rope to the shore so that it can move a little and aerate a larger area.
The cross diffusers are available complete with 20 mm hose tail (other on request) and are delivered with or without float. The 1 m long feeding tube is also available shorter. Each diffuser tube has a length of 18 cm and a diameter of 6 cm and can introduce approx. 1.5 to 2.0 m3 air/hour each (6-8 m3 per cross diffuser). They are also available as self sinking single tube diffusers with hose tail.

This is among the most robust and versatile fine bubble diffusers commercially available. The diffuser has the capacity to pass large quantities of air, oxygen or carbon dioxide with low pressure drop and small bubble size (approx. 1-4 mm). Fine bubble diffusion is inherently more effective than coarse bubble diffusers in providing a greater mixing action and aeration efficiency.
The diffusers are of a tubular semi-flexible construction (32 mm in diameter). An outer polyester sleeve encases a silica particle ballast and an inner nylon distributor. The internal ballast is not fused together, therefore precipitates such as iron and carbonates tend to crack off, and can be flushed out easily. The internal ballast (weight approx. 1.5 kg/m) means that the diffuser does not need to be anchored to the floor of the tank. The unique design of the diffusers makes them largely resistant to biological and chemical fouling. The diffuser resolves many of the problems associated with other diffusers and has proven itself with over 10 years of use in many industrial and waste water treatment applications and it is the leading air diffuser for aquaculture. This gas diffuser is a hybrid air diffuser with the benefits of both tubular membrane and solid air diffusers, but with few of the disadvantages. Solid diffusers can break or become blocked by biofouling, iron and carbonate precipitation. Membrane and other tubular diffusers have to be secured to the tank bottom. The membranes (elastomers) can also suffer from fatigue, and as a consequence the performance can rapidly tail off over a few months. The diffusers are sized (up to 3 m in length, and with extension parts also longer) according to the flow (m3/h) of air to be used. Length is approx. 33 cm per m3/h air or liter oxygen/min flow rate and pressure drop is approx. 200 mbar (<3 psi). All diffusers are supplied with 1/4-1/2" hose tails.

This simple membrane diaphragm compressors supply oil-free air and are perfectly suitable for live fish transports, where the required energy (12 V/DC standard, 24 V/DC on request) can be supplied by a battery i.e. from the truck. As accessories 6 mm hoses and various diffusers are available.

The design of these blowers is based on long experience in blower production. The motor (standard 380 Volt/50 Hz, 2850 RPM) is made for endurance and is offered in different power sizes. The flow capacity based on air at 981 mbar and 20 °C (at the inlet connection) ranges from 110-300 m3/h. Because of the small dimensions and compact construction, as well as the low noise level (45-48 dB), these blowers can be placed almost anywhere. The blowers can be installed singly, in parallel, or in rows for an increase in pressure. On request the blowers can be produced for us in seawater, or for other voltages and frequencies. Air filters, pressure valves and support stands are available as accessories.

The typical emerged blowers (type V) are installed only on the land, but at almost any location. An advantage in recirculation systems is that the heat in the air of a room can be used to heat the water.
The special submerged blowers (type T) are installed directly in the water and therefore allow shorter piping, as well as lower pressure losses. They are much quieter and also save space. An additional advantage in recirculation systems is that the heat generated by the blower motor will heat water.

This reliable and favorable blowers summaries modern know-how of pressure and vacuum generation, based on longtime experiences. The motor is constructed for endurance run is available in various power sizes. Concerning the compact dimensions and the low sound this blowers are easy and everywhere to install. Lateral channel blowers work regenerative. Casing and impeller with radial blades form a circular body. The medium (air) is accelerated by centrifugal force in the blade channels, stocked and compressed. This process continues permanently with continually increasing pressure rising until the medium leaves the casing through the outlet connection. Because of the special principle of construction and design, there is no contact between rotating parts. The machines are delivered as mono stage (M) or double stage (D) blowers with single (S) or twin (T) impeller. As accessories air filters, sound absorbers and security valves are available.

Performance data at pressure operation 50 Hz (= 2900 RPM), for air at 20 degree C, pressure 1013 mbar, tolerance +/- 10 %

In recent years, fish farming has turned into high density farming practice and pure oxygen is essential in modern aquaculture. Several studies have shown adding dissolved oxygen into water on fish farms has a very positive effect on growth rates, feed conversion and mortality rates, all factors that will affect the profitability significantly. On-site oxygen generators allow an uninterrupted supply of gas with a high purity output (adjustable 85-95 %, outlet pressure 4 bar). This means that you can produce gas where and when you need it, and in the exact quantity and quality you need, to reach gas self-sufficiency and independence from external gas suppliers.  This oxygen generators are known as reliable, easy to use and low operational cost. They save energy and money as supply of oxygen cylinders or rent of liquid oxygen tanks becomes irrelevant. The average oxygen production cost are about 1,1 kwh per cubic meter of oxygen. An oxygen generator combined with cylinder gives the highest level of backup in comparison with cylinders it gives overall cost reduction up to 80 %. We use only high quality components and all systems are designed for 24 hours, 365 days a year’s operation. They are easy to operate and require minimum amount of maintenance and service.
This proved generators are based on the well-known PSA (Pressure Swing Adsorption) technology, using two pressurized columns with molecular sieves to ensure continuous production. Dry compressed air is blown through a valve to the vessel where the pressure is built to reach 5 to 7 bar(g). Oxygen is tied to a molecular sieve during the building of pressure and the nitrogen is allowed to pass through to the accumulation tank. While pressure is built in vessel, the second remains without pressure. A part of the produced gas is used for regeneration of the molecular sieve, which, in the case of Nitrogen, is a Carbon Molecular Sieve (CMS). The entire PSA system can be subdivided into several components like: air compressor, air dryer, air tank, oxygen generator, oxygen tank and accessories. The models are available with a capacity in the range from under 1 to over 400 m3/hour (at an oxygen purity of 90 %). Oxygen cylinder filling stations are available on request.

Flows in m3/h for operation with 15°C, 981 mbar, inlet pressure 7 bar, flow variance ±5%, oxygen purity 90 %, purity variance ±1%.
Conversion rates for oxygen: 1 m3 = 1,43 kg; 1 kg = 0,70 m3.
* incl. compressor, dryer and generator.

These waterproof (IP67) and pocket sized testers (153 mm long, 24 mm diameter, weight just 45 g) with digital display are ideal for aquaria or aquaculture and any other field applications. There are different models with replaceable electrode and automatic temperature compensation available that read conductivity or salinity (0-1999 µS EC or 0,0-199,9 ppm TDS), pH-value and temperature (0.00-14.00 pH and 0.0-50.0 ºC) or redox potential (±1000 mV ORP) at an affordable price. The tester are factory calibrated, but can be manually calibrated and measurements are highly accurate (0.1 or 2 % or mV) with high resolution (1,00 to 0,01). The modular design allows easy electrode and battery replacement. A rugged splash-proof and floating casing prevents water infiltration. All the testers work with common batteries (3 x 1.5 V) and have a long live.

This Compact-Laboratory box set is equipped with liquid color analysis tests of: Oxygen (Demand + Dissolved), Hardness (Total + Carbonate + Residual), pH-value, Ammonia, Nitrite, Nitrate, Phosphate, and Temperature.

All tests are also available as single or replacement units and additionally test sets for: Aluminum, Arsenic, Lead, Chlorine, Chloride, Cyanide, Iron, Calcium, Copper, Magnesium, Manganese, Nickel, Sulfate, Sulfite, Zink, Zinn etc.

For the necessary manual analysis, this microprocessor photolyser meter with professional concept and high precision is the right choice. Just select the required program on the foil pushbuttons. The display shows the parameter and dimensions exactly (to 2 digits behind the got). An acoustic sign informs when the reaction time is finished. The results are displayed on the meter and can be stored for later processing. The meter is equipped with a  RS-485 adaptor. Via an additionally integrated RS-232 adaptor the meter can be connected to a printer or PC (cable as accessories available). It is possible to archive over 500 stored data sets with date and time for up to 16 tanks. The meter has a 0-point-memory, which needs no new calibration. This photolyser works with 4 usual 1,5 V batteries, with integrated capacity monitoring on the meter. Alternatively accumulators or a connector for an external power supply is available (as accessories).

Reagenzia/Measurement:
Aluminum 0-0,5 mg/l, Ammonia 0-0,5 mg/l, Bromine 0-10 mg/l, Chlorine 0-5 mg/l, Chloride 0-250 mg/l; Copper 0-1 mg/l, Hardness 0-500 mg/l; Iron 0-5 mg/l, Ozone 0-1 mg/l, pH-value 6-8 and Acid-potential 0-5 mmol, etc.;

This new handheld saturometer (Protection class IP65, with electric backlight display identifies gas super-saturation in water reliably to 250 hPa resp. mbar pressure difference (displayed also as % total gas saturation), with an accuracy of 1 hPa. It works with a usual 6 x 1.5 Lithium cells, with integrated capacity monitoring on the meter. The maintenance free sensor is completely sealed (Protection class IP67, Signal outlet 0-5 V). As option also oxygen (O2) and/or carbondioxyd (CO2) sensors can be connected to the meter, and with the optional software it than even calculates  nitrogen (N2).
The gas bubble disease is very often present undetected and leads to significant damage in the fish stock. If fish are being exposed to oversaturation continuously, they will suffer from it no matter which gas contributed most to the supersaturation! In experiments it was proven, that a continuous charge with only low levels of super-saturation has a significant negative impact on the fish immune system. A fish stock infected with IPN (Infectious Pancreas Necrosis) produced losses of 10-15 % after 90 days whereas fish from the same stock exposed to super-saturation showed a mortality rate of 65 %. The gas bubbles themselves cause a lot of direct damages like lesions and embolism. Those alone are lethal in some cases. But in every case they open the door for secondary infections which can not be repelled by a weakened immune system. Another typical sample is a trout breeder who reported fin rot and saprolegnia on the fish body. Measures showed a gas pressure of 45 hPa which equaled to 105 % gas saturation. It may not sound high but the pectoral fins were severely damaged by gas bubble lesions. The fin rot and fungus (Saprolegnia) were clearly produced by an undetected gas oversaturation.

At the development of this new series of handheld meters we concentrated on the most important functions of the measurement technique. The pure measurement with the focus on precision, fastness and durability packed in a stable ABS-housing 108 x 54 x 28 mm (LxWxD), weight approx. 130-200 g (without sensor) with 4 simple touch-buttons, allows for an extraordinary relationship of price to value. This functional meters have a modern and economic design, are dust- and weatherproof (according to IP65/67) and have an illuminated 3-line display (accuracy: 0,5-1,5 % resp. +/- 1 digit at a norm temperature of 25 °C) with battery status. This meters have additional features, such as: automatic min-/max-value memory, hold-function, and an overhead display on push-button. The reasonable priced meters are delivered completely ready to use incl. battery (type AA), cable and sensor (12 mm Ø). Transport cases are available as accessories.

All this electronic devices have a size of 142 x 71 x 26 mm (LxWxD) and a weight of approx. 155/255/300 g (incl. battery/sensor), and have a LCD double display (precision: ±1 digit) for measured values and temperature, min-/max-value memory, configurable automatic switch-off function (1-120 min), hold-function, foil pushbuttons, automatic temperature compensation, 12 mm Ø sensors, serial connection, 9 V  battery with warning and external energy connector as well as integrated stand- and hanging clip. Multiparameter-Meters (for PH-value/Redox, Conductivity/Salinity, Oxygen/Temperature in one device), on request.

DATA COLLECTING SYSTEM for GHM meters

In connection with a PC, a meter of the GMH-series, the PC-interface adaptor (Accessories) and this software, a comfortable and reasonable data collecting system can be build (registration of data also over many years possible).

This improved meters were specially adapted for use in aquaculture and limnology. The compact (L x W x H 165 x 83 x 34 mm, approx. 305 g) splash-proof cover (IP 54), the plastic sensor (14 mm Ø, 150 mm long, with 1.5 m cable), the very long sensor life (approx. 2 years standby time), and the delivery with NiMH-batteries (2 x AA Mignon) and USB-cable with charger in transport case, make these meters perfect for field work or laboratory use. The large graphic multi-display makes the readings available clearly and quickly. The short polarization time (approx. 30 sec. max. 5 min.), the low flow current sensitivity (1 % at 5 cm/sec.), the high precision +/-1 digit (0.1 mg, 0.5 % or °C), as well as salinity correction, automatic air-pressure and temperature compensation (in the range of 5-40 °C) makes working easy. Automatic calibration with the calibration chamber (included) is an additional feature. Options include stainless steel sensors (4.7-5.4 mm), and other cable lengths available. To enable you assigning measured values geographically, these meters are available with or without GPS.
This modern devices have: an electronic compass, a data logger with adjustable start/stop time and measuring intervals between 5 sec. and 10 min., with automatic storage of all measured values ​​(approx. 3 months during battery operation, also mains operation possible), a large internal memory (32000 locations), and an individual measured value storage on key press with 1000 memory locations. Additionally, radio controlled (RC) switching outputs for standard RC sockets and acoustic signals, for up to 4 RC sockets with separate two-point control for oxygen (absolute or relative), conductivity, temperature or air pressure, two additional alarm outputs, which trigger a standard RC bell when the set values ​​are exceeded or subtracted, and two additional channels for optical and/or acoustic alarm on the meter. The power-saving graphics display (transflective with background lighting) with best readability even in direct sunlight, and adjustable contrast, activates automatically display and background lighting when the device is moved (can be switched off). The beep (alarm and key tone) volume and frequency is adjustable. PC-software for data visualization and data export available optionally (with free online software update).

This new development is the first optical oxygen sensor with SCS interface (Simulation Clark-Sensor), for a perfect integration into running systems. The ideal substitute for your existing oxygen sensors. Via the SCS interface downward compatible to classic oxygen sensors (galvanic isolation), works together with classic transmitters. Additionally, the sensor can be connected via the 4 to 20 mA current output or with a process control system (SPS). As accessories, a PC-adapter (USB-RS485) is available, with which the sensor can be connected directly to a personal computer, and configures from there (Software for free), where just a net-device is needed and no external meter. The calibration is simple and only needed once as the calibration data can be stored in the sensor. The robust and simply exchangeable sensor cap has a warranty of 2 years. It guarantees stable values at once, little drift, quick reaction time, and all independent from incoming flow. The sensor has no sensitivity towards H2S or CO2, but an automatic temperature compensation and malfunction diagnosis. Measurement range 0-20 mg/l, 0-200 % sat., resolution (at 25 °C) +/- 1 %, limit 0.1 %, reaction time < 60 s, temperature range -5 to +50 °C. The sensor can be delivered with an IP68 termination plug or with a fixed cable in different lengths. For mounting in a probe holder the sensor can be delivered optionally with a 1" process connector. For fish farming there is a robust version with a biting-protection with nut inserts available for water depth up to 20 m. A display- and regulation system (for up to 8 sensors) is available as accessories.

When it comes to automatically controlling and adjusting critical water parameters, it leaves nothing to be desired. Due to its flexible modular concept, the system is the perfect solution for most applications in aquatic environments. Apart from comprehensive timing functions, it provides measuring modules for the parameters of pH value, redox potential, temperature, conductivity, level (fill level), oxygen and air pressure. Up to 8 sensors can be linked to the system in any requested combination. This allows, for instance, simultaneous pH value-measurement and adjustment in eight different pools – which is so far unique. Connection facilities for up to eight measuring modules in any requested combination allows for connecting up to 16 switching outputs (4x4) for control and adjustment functions measured data storage for 2000 measuring chains battery backed computer interface for PC-data evaluation with the software, capable of being network-integrated by LAN adapter, flash memory technology for update-function, automatic sensor identification and sensor testing, day/night simulation, lunar phase simulation, high/low tide simulation, flow simulation, timer clock functions, time interval functions, night modus, acoustic, optical and external alarm, etc.
The system provides greatest accuracy, ease of use, and maximum reliability. The systems are available as measuring/regulation systems with a switch socket and mains adapter for permanent operation. Besides its accomplished design, its practical special functions are thoroughly convincing, too. It is this facility that gives you the overall picture of your past readings thus quickly revealing any trends. The systems can be extended, even at a later date, to form a measuring and regulation system designed for permanent operation, simply by connecting the optionally available power station. An integrated alarm function assures greater safety. You can select an upper as well as a lower alarm setting. If, for whatever reason, one of these alarm settings is reached, the Power Station switch socket will be turned off. At the same time the alarm status will be appear on the display. The result is a reliable and effective prevention of damage. Microprocessor-controlled, Alarm function, Large display panel, Manual / automatic storage of measurements (up to 470 readings), Automatic transition to energy-saving mode when being run on batteries, Battery check, Semi-automatic calibration with sensor test (for pH, redox, conductivity, oxygen), High-quality, low-maintenance sensors.
The software is the central and convenient solution for controlling, adjusting and analyzing all industrial measurement and control systems. At just one glance, the user can check out if everything is okay – and interfere if necessary. Internet connection allows for controlling and adjusting the system even from remote PCs. It allows for analyzing and controlling the data measured by up to 255 industrial systems in one central PC. Allows for configuring all system parameters from PC, allows for status e-mails and SMS alarms, data base and graphical presentation of measured data and measured value evaluation.

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Used successfully for over 20 years by federal, state and professional hatcheries and fish producers here and abroad, this jar can be used for a wide variety of species like: Salmonids, Thymallids, Coregonids, Acipenserids, Percids, etc. Made of high impact, non-corrosive easy to clean plastic, this uniquely designed hatching system enables uniformly distributed water to rotate fish eggs ever so gently and evenly. It works very simply as water from the supplying hose is directed down to the open-ended feeder tube in the center of the jar. The tube (diameter 3 cm = 1.25 in.) easily accommodates the preferred water flow so that the eggs at the base are rotated uniformly and precisely. The jar has a height of 45.8 cm (18 in.) a diameter of 16 cm (6.25 in.) and a volume of 6.86 l (232 oz.). It weighs only 2.5 pounds and can be ordered complete or also without feeder tube and screen. A circular filter/mesh screen (as accessories) prevents waste eggs from spilling out of the jar, while the large spout (length 7.5 cm = 3 in., width 5.3 cm = 2 in.) at the top lets hatched fish swim out at just the right time. Now you can virtually duplicate nature's way of hatching eggs with this durable, see-through incubator jar. So next time you want your eggs "over easy", make sure you are using this hatching jar.

This simple and cheap jar system is suitable for hatching of eggs of various fish species, like carp, pike, perch, catfish, burbot, sturgeon etc. It is made of stainless steel frame and saves space and water. Each "Weiss or Zougg" jar made of glass with a volume of about 9 liters and bottom sieve, has a its own inlet pipe with valve and a overflow with pipe, so that it can be supplied individually with water. After hatching the larvae usually leave the jars by themself with the water flow or are removed by the farmer from the jar. The system can be build with any number of jars (up to 10 pieces in single and up to 20 pieces in double row).

This well designed systems are made of stainless steel and are equipped with "zougg or weiss" glass jars witch can be removed and serviced separately. Through the inlet tank on top, all jars can be individually supplied with water. The tank and feet are somewhat adjustable in height. The eggs of various fish species (Cyprinids, Esocids, Thymallids, Coregonids etc.) are incubated in the jars and rotated gently by the water flow. A breeding cone for salmonid eggs and an overflow sieve (1-2 mm holes) to avoid eggs or larvae being spilled out by water, is available as accessories. The standard systems have dimensions (LxWxH) of 115-215x40x165-185 cm and are equipped with 3-7 glass jars each with a volume of 8 liters. Other sizes or 3 liter jars are possible on request. Single jars with or without stand support are available too. The system can be equipped with a heating/cooling system and in connection with an UV-sterilizer operated in recirculation.

This vertical incubators, originally developed in America but produced now in Asia, guarantee safe conditions for the professional breeding and hatching of salmonid eggs (like: salmon, trout, char etc.) and can be combined and arranged in different ways, to utilize the available space as effectively as possible. The water (min. 5 l/min) from the inlet, flow trough the trays on which the eggs stay, and leaves the water tray over the front during the side canals to the next tray, were it flows again through the egg tray and so on, so that all trays will be supplied with sufficient water. Without disturbing the other trays, each tray (approx. 62x52x8 cm) can be drawn out and controlled easily and provides in the inserts (approx. 45x37x5 cm) perfect conditions from the fertilized egg to the swim-up stage. They are available with 5, 8, 10 and stacked with 16 or 20 trays for up to 1 liter or 10,000 eggs per tray) made from strong non toxic plastic material and includes the aluminum or stainless steel frames (approx. 64 cm deep, 58-60 cm wide and approx. 50, 84, 100 and 175 or 210 cm high, changes reserved) and all egg trays with polyester screens (approx. 1-2 mm).

This vertical incubator, newly developed and produced in Europe, allows optimal conditions for the incubation and hatching of salmonid eggs (like: trout, charr, grayling etc.) and save water. The water (only 1.8 l/min) from the top tank with float switch and filter tube flows by gravity trough the trays, from the central inlet funnel through the sieve baskets where the eggs stay, and leaves the tray via the outlet holes all around the sides, where if lows down the cone shaped tray to the next one a.s.o., so that all trays will be supplied with sufficient oxygen. Without disturbing the other trays, each tray can be drawn out and controlled easily and provides optimal conditions from the fertilized egg to the swim-up stage. The corpus made of black plastic has a removable and roll-up front cover also made of plastic material, which reduces light within the incubator. The incubator is available with 10 trays and baskets (for 100.000 eggs respectively up to 1 liter eggs per tray) made from aluminum (approx. 40 cm diameter and 5 cm high). The whole incubator has dimensions (W x D x H) of 48 x 62 x 128 cm. A support frame (45 cm high) made of stainless steel is available as accessories. The system can optionally be equipped with a heating and/or cooling system or operated in recirculation.

The horizontal through allow an easy survey of the breeding process and are available for up to 4 or 7 baskets approx. 40 x 40 cm (for up to 1-2 liter eggs each) made from smooth reinforced glassfiber polyester (approx. 215 or 360 cm long). The screen (1-2 mm holes) of the egg incubation baskets are fitting exactly. The water (min. 0.1 l/sec) from the front, flows through the baskets on which the eggs stays, and leaves the through at the back side, so that all baskets will be supplied with sufficient water. Without disturbing the other baskets, each basket can be controlled easily from the top. Optional an outlet screen is available. This troughs can also be used for start-feeding of the fry after the yolk sac has been absorbed.

An experience of many years in egg incubation and fry rearing, as well as stocking experiments in various waters, where the base of this new and innovative invention for the hatching of salmonid eggs (like salmon and trout, as well other species on request) in natural streams. The flood save and closeable box is made of stainless steel with dimensions of (LxWxH) 90 x 20 x 13 cm, weight approx. 13 kg). It is used for the professional and controlled incubation and hatching of salmonid eggs as well as for the breeding and rearing of fry for (re)-stocking purposes. The box is simply set into the water (front flap against the current and cover a little above the water line) and anchored by the eyes to the bottom ground. Depending on fish species and egg size, the box supports a save environment for up to 10.000 eggs and fry until exogenous feeding. The eggs lay in baskets, which can be fitted with special hatching substrate to reduce maintenance. Under „normal“ conditions, the maintenance is limited to the periodical control (1 x per week) of the system, where results of 90-95 % are reached in average. When the fry reach the stage of exogenous feeding they can distribute themselves in the brook or river.

This egg sorting machine uses the most current technology to sort 100,000 eggs per hour. It is available with both live and dead egg counter or also without counters. Using the patented standard disk, the egg sorter will sort salmonid eggs from 5,000-18,000 per kg (150 to 500 per ounce), or if equipped with the salmon disk, it will sort any size salmon egg. Best of all, you never have to change disks to handle different sizes of eggs. The patented technology uses fiber optics and modulated infrared light to scan the egg and assure the highest level of accuracy (approx. 98-99 %). It has been used all around the world and will accommodate any local voltage. In the interest of safety and reliability, the local voltage is reduced to 12 volts DC. It has dimensions (LxWxH) of approx. 78 x 35 x 27 cm (32 x 14 x 11"), a weight of 23.4 kg (52 lbs.), and an egg tank capacity of 19 liters (5 gallons) and is made of clear and white acrylic plastic. A water and compressed air supply is needed for operation.
Eyed eggs are placed in the trough with water flowing through the bottom. Several kilogram of eggs may be loaded at one time. The water flushes the "eyed" eggs against the patented disk where they are captured in the tapered holes in the outside of the disk. Once the egg sorter is fitted with the disk matching the type of egg you are sorting (trout or salmon) it will sort any size egg inserted. The eggs in the disk then pass an electronic scanning device which, using modulated infrared light, detects dead eggs. All with 100 % ambient light immunity. Dead eggs are then ejected out one side of the sorter while the live eggs travel to the opposite side where a gentle flow of air ejects them into a curtain of water which carries them to a separate container - safe, sound and ready for further incubation. The counters then increment, providing accurate totals of both live and dead eggs sorted. Each time a dead egg is detected, a light comes on giving you visual assurance that everything is working correctly.

This "Solaris" Feeding System was designed and constructed to the latest specifications in the field of aquaculture economics by using the most modern components of present day technology.

The model "INTERVAL" is equipped with a solar panel, a feeding computer and accumulator (to balance weather depending days) which is mounted in a splash proof box (directly on the feeder) and can be adjusted exactly to feeding intervals, quantity and time. The daily feeding amount (1-5 mm Pellet) is adjustable from 0,1 kg up to 100,0 kg/day.

The model "SUPERSPREADER" is equipped with an adjustable sector and/or round spreader (radius adjustable approx. 2-8 m), and delivered with a larger solar panel and stronger accumulator.

The model "UNIVERSAL" has a larger outlet and can additionally be used for granulated seeds or meal feeds and pellets up to 12 mm.

The white or green feed hoppers are available in five sizes (for 15, 25, 45, 75 or 95 liter). As accessories a tube or ring holder hopper support is available.

All models are also available without solar panel and accumulator, for the connection to a central power supply with transformer and distributor box (for up to 1 and 12 or 24 feeders).

This independent feeders where developed in Austria and are successfully used since more than 20 years in small to large fish farms. The user friendly feeding system with patented mechanism (spindle) allows easy feeding and supply of food to day- and night active fish or other animals. They can be powered by the supplied battery (6-12 V/DC), which is recharged with a battery charger (not supplied) or a solar panel (optionally available). Because of the optimized system, the batteries have a long self-live, depending on feeding times and durance, usually about one season. The timer clock, which is integrated in the hopper, allows exact settings of feeding times and pauses. Standard particle or pellet sizes of feeds can range from 1 to 5 mm, smaller or larger food particles (also corn or other seeds) are possible optionally. The robust, grey plastic containers (made from polypropylene) guarantee for a long life of the feeder. The standard feeders range from hoppers with a volume of 10 to 180 liter (larger hoppers are possible on request). The larger feeders are also available with an integrated ejector-mechanism, which ejects the dry-food up to 8 m (optionally up to 12 m) in front of the feeder. The feeder is usually placed on the edge of a tank or above a dock and fixed via the two mounting holes on the sides. All feeders are also available without batteries but with transformer (220 V/AC to 12 V/DC) for the connection to an electric network.

This easy to use and very robust pneumatic feeder, is specially recommended for feeding on ponds or raceways, where large feeding areas (approx. 10 m2) and a wide feed distribution (up to 12 m) are necessary. The compact and lightweight container made from stainless steel is suitable for the rough conditions in the field outside. It has a capacity up to 120-240 kg of dry food, has 2 extendable pipe outlets (2 ") with distributor plates and contains also the blower (230 V/50 Hz, max. 375 W) etc. A timer is available as accessory and allows to set up to 4 feeding times per hour, and the feeding time can be adjusted independent. The feed quantity and be additionally changed at the 2 pipe outlets by a screw. The feeders are available in different sizes, with a diameter of 70-85 cm, a height of 100-125 cm and an empty weight of 30-40 kg.

Since more than 30 years this feeders are in use for save and exact feeding of fish fry and fingerlings. The clockwork runs over (12 or 24 hours) and is started if the belt is returned (in the morning) where the feed (up to 3-5 kg) is placed. The new clockwork with strong and corrosion free steel spring and splash-proof acryl cover as well the plastic box lasts best the weather conditions and guarantees a long live of the feeder.
The feeders are available in 2 sizes and have dimensions (L x W x H) of 560 x 200-300 x 150 mm (weight approx. 2-3 kg) and can easily used at any place without electric energy, like nursing ponds. Electric beltfeders (12 V/DC) with or without solar panel, on request.

20 years world wide experience in the field of plankton research, catch and larval feeding are the basis of the new "Plankton feeder", which was developed with the Institute of Fish research.
This device is designed for the professional application of frozen zoo plankton as a larval diet in marine and fresh water hatcheries for the production of high quality fingerlings like: Coregonids, Chars, Grayling, Salmon, Sturgeon, Sea bass, Sea bream, Turbot, Grouper and other species. The technique is based on a timed "wash down" of feed layers from large frozen plankton crumbs (up to 20 kg) and homogeneous distribution of the thawed plankton rations to the larval tanks by a specially developed self cleaning distributor. "Wash down" of the food layers and thawing can be performed either through spraying or by flooding or by a combination of both facilities, the remaining plankton is frozen immediately. The feed particle size can be perfectly adjusted by a special sieving unit. In order to avoid membrane damage and leaching effects of the thawed plankton organisms, the feed is distributed to the (up to 32) larval tanks by gravity flow only. Automatic feeders for live zooplankton (Artemia), on request.

This professional tanks for the long distance transport of live fish are made of strong double wall reinforced glassfibre polyester in white color, isolated with 2 cm thick foam panels and metal fittings made of stainless steel. On the top, the tanks have an anti-slip surface, which makes it possible to walk and service them safely. For the save transport they also have a well closing splash-proof cover, air and oxygen connections as well as a handle. The tanks have a 2" outlet and a water-proof hatch for water drainage or exchange, situated on the front wall. A large outlet gate with inner closing door allows easy emptying the tank of fish and water. As option these tanks can be supplied with dividing inner middle wall and a second outlet gate. As accessories mounting corners, an outlet chute or an outlet funnel with pipe adapter are available.

The numbers in brackets are overall dimension with gate and cover.

This individual tanks for the save transport of live fish are made of reinforced glassfibre polyester with a smooth surface in the colors white or green. To use the space of the transport vehicle more economically all tanks can be manufactured to customer design with your individual layout dimensions. All tanks are supplied with well closing, removable cover and lid as well as hand grips. As option these tanks can be supplied with slanting inner bottom and splash protecting top and with drainage valve with sieve and outlet gate with door. As accessories installed (12 Volt, DC) circulation pump systems or compressors with diffusers, pressure reducers with flowmeters, oxygen cylinders or liquid oxygen units are available.

FISH TRANSPOR TANKS from Polyethylene

This reasonable tanks for the short transport of live fish are made from smooth polyethylene in green color. The tanks are fitted with handles and available in different sizes (LxWxH 80-130 x 60-90 x 35-65 cm) with volumes of 130-500 l (larger on request). All tanks are delivered with removable cover in aluminum and outlet. As accessories, separate (12 Volt, DC) membrane compressors and various diffusers and hoses are available.

This lifting nets can be used perfectly to harvest larger fish quantities gently from raising- or holding-units.
The fishes are harvested directly with the lifting net from cages, tanks or other systems where the fish are already kept in high density by using a crane (see picture). For opening the base of the net, simply the rope of the automatic lock is pulled, and the fishes are released gently.
The lifting net has a diameter of 1 m and is available with different outfits (just with 50 mm outer net, and with or without tarpaulin inside, and with or without 10 mm inner net. It will be delivered completely with single or double frame made from aluminum or galvanized steel, ropes and automatic lock.

This lifting devices which work with an "Archimedes Screw" of 38 cm in diameter and are suitable for up to 6 t/h of any fish species and sizes between 3 and 3000 g. They are mobile and used mostly  for indoor or outdoor transportation of live fish, from and between ponds, raceways or net cages etc. to graders, transport tanks or slaughtering. The frame guarantees easy regulation and indication of the screw angle and allows to place it in various positions. The device outlet is designed in a way that it can be connected to a pipe system.
The lifting devices are complete equipped with: screw made of durable fiberglass reinforced polyester, frame construction made of stainless steel, wheels made of hot-galvanized steel, firmer and electric motor (380 V 0.7 kw) and available in lengths of 4, 5, 6 or 7 m for a lifting height of 2-4 m. Lifting devices with larger screw diameter, on request.

This newly developed impeller fish pumps are specially suitable for loading live fresh- and saltwater fishes and shrimps from below 1 to over 2500 g in body weight, from production units up to 9-15 m in height to grading machines, holding basins or transport tanks. They work with 1-2 electric motors (380-420 V/50 Hz, other voltages on request) for fast prime- and main-drive (adjustable 100-1500 RPM), and a directly connected maintenance free gear drive and reaches a fish loading capacity of up to 10-30 t/h. The inlet- and outlet connections have a diameter of 63-200 mm (2.5-8.0"). The electric box can be controlled directly on the panel or by the supplied remote control unit (reach up to 200 m, IP67). The fish pumps made from stainless steel are mounted on a moveable trolley made from stainless steel or aluminum, fitted with 2-3 inflatable tires (25-40 cm diameter) and 1-2 stabilization feet, as well as 1-2 handles. They have compact overall dimensions with a relatively low weight . Flexible hoses with fast-coupling sets and a separator unit with 5 or 10 mm gratings which separate fish from water are available as accessories.

For the lifting of fishes to grading machines and/or the loading of transport tanks etc. this fish vacuum pump is especially suitable. The functional principle is relative easy but effective, which helps to reduce unnecessary breaks and expensive repairs. The fishes (up to 5 kg in body weight and up to 16 t/h) are sucked up to 5 m in height, via an inlet funnel over a 6 m long suction hose (150 or 200 mm Ø) by two vacuum tanks (each 150 l) which work in exchange. By a 0.6 m2 large separator with 8 mm grid distance, the fishes are separated from water and glide so directly into a transport tank etc. The water and fishes leave the unit by a hose (water outlet 200 mm - fish outlet 230 mm Ø), which can be adjusted in height from 90-150 cm. The live fish pump has dimensions (L x W x H) of 360 x 155 x 230 cm) and a weight of approx. 650 kg. The motor (400 V/50 Hz, 4.0-7.5 kw) is integrated into the housing. The 3 transport wheels and telescopic legs guarantee that the unit stands well and is safe.
As option, there is a scale available, which weights the fishes (up to 1 kg in body weight and up to 6 t/h) after the fish pump. The weighting results (accuracy +/- 50 g) can be added and easily read from the display. The fish scale has dimensions (L x W x H of 165 x 103 x 165 cm) and a weight of approx. 190 kg.

Originally developed at the Austrian Institute of Fisheries Economy in Scharfling, this simple but effective sorting device is perfectly suitable for sorting of fry and fingerlings in small to medium fish hatcheries and already used for centuries. The distances of the grating can be easily adjusted by shaping the device to a rhomb. The seawater resistant impregnated wooden frame keeps floating and an exact distance between the aluminum grates. The device is placed in one tank, than fishes are just put into the device, the smaller fish go thru the grates while larger ones can't pass and are placed in another tank. For grading into more than 2 size classes, the grates are enlarged by simply pushing the whipable scale-bar, and so on.

This graders are made of aluminum and stainless steel and are available for various fresh- and sea- water fishes from Salmoniformes and Cypriniformes to Perciformes etc. The grading technology is based on 2-5 V-shaped channel with moving plastic fingers below, which moves the fish until the channel is too wide for the fish thickness and the fish are released to the collecting tanks below, from where they are flushed with water to the outlets, and additionally by pipes back to the holding ponds. During the whole grading process the fish are kept wet by water (submersible pump as option). The machines are mounted on a trolley with 2-3 wheels. Equipped with 380 V/50 Hz motor (230 V on request).

This newly developed fish counter series made of aluminum and plastic was specially developed to count fast (about 4 t/h) and accurately (over 97 %) live fish like salmonids, cyprinids and percids (from 5-5000 g) after an automatic grader. The counter is simply connected to the outlet tube of the grader or any other tube.. Provided with programmed intelligence, the fish counter performs various controls (auto-test) and informs the user in case of failure. The electronic display provides the following information: number of fish counted, status and degree of sensivity selected. The two new sensors with transmitter and receiver modules are mounted into a slide and are provided with an electrical connector. The graphic display and the power supply cable are also equipped with an electrical connector (Input 90-220 VAC/15 VDC). The various connectors are connected in the junction box of the main module. All electronic parts are sealed, easily removable and replaceable by the user. The counters are available for fresh- or seawater use and supplied with a set of separators and two support legs. A reception tank/funnel with 160/200 mm diameter pipe connection is available as accessory, as well as an inlet hopper for manual use.

This fry counters have been developed with particular emphasis on well-being of the fish. The counters operate according to the "free-swim" principle: the fry or fingerlings (0,2-50,0 g depending on species) are in their natural element all the time and swim through the counter unit by instinct. Thus the counting will in no way cause stress to the fish. The counters have patented nozzles that separate the fish by means of water so that each of them passes the photoelectric cell - a simple and reliable way of counting the fry with 98-100 % accuracy. The counters are fitted with reliable electronic components with memory. The electronic cylinder operates on chargeable batteries but may also be connected to 220 V/50 Hz. Sensor unit and electronic cylinder are both water-resistant. The counters are easy to use and to handle. No division according to size is required and only one person is required to operate or move the counter.
Each counter includes a stainless steel water pump (220-240 V/50 Hz, 940 Watt, 11 kg with a capacity of 12 m3/h), and frame to mount the counter on the edge of a tank or placing it in a tank or cage. As accessories kits are available to count fry from 0,2-0,5 g.

This certifiable desk scales made from stainless steel are splash protected (protection class IP-65), strong and robust . The illuminated multi-display with 25 mm LCD-display, 5 function buttons, and 35-70 cm high post, as well as tare-, count-, percent- and add- function allow an multifunctional use. The display can run continuously or switch of after an adjustable time. The models have 4 adjustable feet, a RS232 output for a printer and an IR input for a remote control (not included), for an energy supply of 230 V/50 Hz). Desk scales for battery operation, on request. Optionally these scales are available with certificate.

This new scales with stable base, 4-cell measurement technique and corrosion free platform made from stainless steel (70 mm high) are universally to use. The display (27 x 9 x 4 cm) with 25 mm LCD digits, 100 % tare function and 1,8 m spiral cable can also be mounted on a wall (angle adjustable). It is possible to select continuous display or automatic switch off. The energy supply over an rechargeable accumulator with charger allows a mobile use. The models have two inserted transport wheels on the side and on the opposite side a hand grip. Optionally the scales are available with wireless display.

This stable and professional hanging scales with robust cover made from aluminum (approx. 260 x 195 x 210 mm) are equipped with a 360 degree turnable security hook which is produced for 150 % over load and 500 % breaking strength. The 30 mm large LCD-display with illuminated digits, has an automatic tare function. The weight fixing function allows to weight the goods also during swinging load. The energy is supplied from a rechargeable accumulator with charger. All models models are suitable for the use with a remote control.

This self priming, compact and engine driven pumps are specially suitable for the use in aquaculture, agriculture and industry and can also pump sludge or small stones. Driven by a strong and economic 1-cylinder 4-stroke petrol motor, this centrifugal pumps are environmentally friendly and reliable. A transistor controlled starter guarantees easy running also after longer pauses. Type WH is for higher pressure and Type WM is specially suitable for seawater and chemicals as the pump casing is made from polyester. The types WT are for waste water and stones up to 3 cm diameter available. All types (except WX) are bordered with a sturdy frame. All pumps are delivered completely with pipe connections and ground filter.

This single stage pumps with open axial propeller are suitable for less polluted water with suspended solids of up to 50 mg/l and a water temperature of up to 25 °C. The left running motor (380/400/500 V, 50 Hz, 1450 RPM, power factor 0,83-0,87 cos) has a failure runner and waterproof coiling. The motor is capsulated by a glide seal, the axial and radial wave bearing in water lubricated glide bearings. The propeller is made from bronze (CuSn10), the radial bearings from bronze and stainless steel, and the bolts and screws from stainless steel (V2A). All pumps are made according to DIN EN ISO 9906 class 2, protection art IP68) and are suitable for endurance run, timed operation or frequency regulation and are supplied with 10 m directly connected waterproof rubber cable. The installation can be in any angels, horizontally and vertically, as well as submerged hanging or free standing. The connection flange is C 200-300 DIN.

The standard outfit has a casing of painted grey-glue metal (GG25). Casings in aluminum or bronze are possible on request. A nieveau regulation, frequency control, motor monitor and operation counter are available as accessories.

This for the mobile and static operation developed submersible pumps have a special sealing and lubricated bearings for the maintenance free endurance run in any position. Pumped can be all liquids with particle sizes of up to 7-10 mm, a weight of max. 1.100 kg/m3, up to 40 degree C and a pH-value between 4-8. The motor (1460/2900 RPM) is available for 400 V/50 Hz as standard (other voltages on request). A thermal protection and a double case cooling  protect the motor from overload (IP68). The pumps, made from aluminum and stainless steel, are available with an extern or build in floating switch as accessory, so that the pumps work only when it is necessary.

These compact submersible pumps in new design with more stages are maintenance friendly, and are developed for long resistance. As all metal parts like: housing, cable cover, motor adaptor, wheel, valve, inlet screen and outlet connection cable including couplings are made from stainless steel (AISI 304), these pumps are complete resistant against rust. Propeller and diffuser are made from Polycarbonate, the bearing from Polyurethane, and the sealing from special rubber material. The maximum outside diameter of these pumps is 99 mm or 4 inch (3 or 6 inch on request), so that they fit into a pipe. The outlet connection is 1-2 inch and the length of the pumps is 695-2368 mm and their weight 11-52 kg (depending on types).

This pumps with vortex propeller made from plastic can be mounted and used submerged inside the water (wet) as well as free standing outside the water (dry) and are suitable for particles up to 6 mm. Because of the strong ceramic bearing they are suitable for endurance run. All electric parts are embedded completely in plastic and a thermo-switch works as a overload protection. The split-pipe motor (220-240 V, 50-60 Hz) is specially energy saving and very maintenance friendly. The large prefilter caps (front and back) can be removed without any tool. The connections (pressure/suction) have 1,5 - 2,0 ". The pumps of this serial have compact dimensions and can be used for fresh and salt water. They are delivered complete with 10 m cable and plough, as well as mounting feet and handle.

These compact synchrony-generators are more powerful than asynchrony-generators. Motor, generator and exhauster are water cooled and need no air ventilation. The cooling water can be used for heating. They are installed into an encapsulate housing which guarantees low noises (52-54 dB). The units are easy to operate with the supplied remote control unit. The diesel consumption is about 0.3 liter per produced kwh.

This save and powerful electric fishing devices are successfully in use on all continents since over 20 years. Through the various and sometimes problematic areas of use, a wide range of devices was developed which will match nearly any requirement.
All devices are build to EN 60335 and EN 55014-standards, IEC and VDE-regulations, and can be TÜV-tested if preferred. The electric building corresponds to security class II. Therefore all power delivering parts are double isolated and guarantee the best possible security for persons. A "Totmannswitch" (in the European Union required) guarantees for additional security, so that all outlets of the device are without electric current if dangerous situations arise. The permanent excited generator and the high quality magnet materials guarantee a continuous and reliable power. Each device will be tested mechanically and electrically completely and delivered with user manual.
Direct current creates usually a better anodic reaction as impulse current would doe. But at extreme conductivities or for electric barriers with direct current soon the borders are reached. As result, powerful combined (Direct-/Impulse-Current) devices where created, where the impulse frequency and volts can be adjusted (via motor turns or switch). The back-carry units are compact lightweight systems with high outgoing power. Impulse devices are a little larger and have a little more weight than direct current devices.
We deliver net-, battery- or petrol-driven back-carry- or stand-devices with direct- and/or impulse current with an outgoing power of 250-11.000 Watt (5-160 kw/impulse at 10-100 Impulse/sec.), and a current of 300-960 Volt with a weight of 10-135 kg and for a conductivity of 50-10.000 µS.
As accessories are available: 30-50 cm Ø Stainlesssteel-Anodes with RGP-electro handles up to 6 m in length, Copper-Cathodes with cable and connector, Plastic cable drums for up to 200 m cable, hand- or foot-Totmannswitch, Electro-rubber outfit (tested to 1000 Volt) as well as tanks and lights. More information in the brochure at the following link.

Electrofisher Brochure

This device is specially suitable for the fast and easy stunning (electroanesthesia) of fishes (up to 50 kg/cycle) before killing and slaughtering. It works with electricity over a transformer (Input 230 Volt, Output 42 Volt). All parts of the device are made of corrosion free materials. The handle with buttons and lights is made of plastic, the electrodes are made of brass with honeycomb-like plastic cover. The device is available with or without plastic container (approx. 60 l) and cover.
The fishes are placed in a plastic container together with water. For the stunning, both electrodes are submerged into the water and the button is pressed, while the stunning process is controlled by a lamp. To reach all fish correctly by electricity, the electrodes of the device should be moved and turned horizontally. Fishes are anesthetized within seconds and can be killed or slaughtered and gutted thereafter.

This device is specially suitable for the save and reliable stunning (electroanesthesia) of fishes (up to 200 kg/cycle) before killing and slaughtering. It works with electricity over a transformer (Input 230 Volt, Output max. 160 Volt) with 3 adjustable regulation knobs for the pre- and main stunning process which allows slowly increasing of the current and reduce internal damage of the fishes. In normal cases the knob is in the middle position, in special cases i.e. if always the same fish size or the same fish species are stunned, the knobs allow to optimize the results. All parts of the system are made from corrosion free materials. The container with cover is made from plastic, the electrodes which are fixed on two sides are made from stainless steel. The containers are available in 3 different sizes (90, 280 or 610 l volume).
The fishes are placed in the plastic container together with water and the cover is closed. The control box should be mounted dry on a wall. For the stunning, the button on the side of the control box is pressed, while the stunning process is controlled by a lamp and terminated by an acoustic signal.

This special stainless steel knives are designed for long live and resistance to hard wear. These can be used for many hours without problem to archive high productivity. The blades are finished by hand with high quality steel - a guarantee for maximum cutting precision and easy sharpening. Either stiff or flexible blades are available according to requirements. The ergonomic design of the handles makes them easy and save to hold. The various designs were developed in conjunction with users. They take into account both the type of cutting as well as the size of the user's hands. The special green plastic material used gives the handle its firm hold.

We prepared 3 special fish knife sets for you:
The START Fishknife Set includes: 1 Herring-, 1 Flowcutt-, 1 Fish-, 1 Bone-, 1 Strike-, 2 Slaughter- and 1 Fileting-knife, with blades from 6,5 to 21 cm.
The STANDARD Fishknife Set includes: 1 Herring-, 1 Carp-, 1 Fish-, 1 Cooking-, 1 Stitch-, 2 Slaughter- and 2 Fileting-knife, with blades from 4,5 to 26 cm.
The PROFI Fishknife Set includes: 1 Fishcut-, 1 Eel-, 1 Mackerel-, 1 Salmon-, 1 Fish-, 1 Gut-, 1 Skinning-, 1 Bone-, 1 Strike-, 2 Slaughter- and 2 Fileting-knife, with blades from 5,5 to 31,5 cm.
The COMPLET Fishknife Set includes all 3 sets (30 different special knives). All models are also available as single knives.

This gutting devices are in use since more than 20 years and a valuable help for small and medium processing plants. Depending on the diameter of the suction pipe (standard 32 mm), they allow to gut and clean fish (like trout) from 150-1000 g (optionally up to 3000 g) in one rational working process, without give the fish out of the hand. There is also no need for turning over the fish in your hand as all sequences of operation start from the vent. If the operator should slip in the direction of the blade while cutting, an injury can be excluded.
With the adjustable and save gutting blade the ventral wall of the fish is cut starting from the abdomen. As hygiene is the most important factor when processing fish, injuries of the guts are also excluded. The suction head has two scrape edges at its lower rim. While passing through the fish, all remains (like kidney and blood) are removed. By pressing a button, an automatic knife comes down and cuts the gorge, which is than sucked and stored in a container. Optionally, after gutting the remaining blood is removed by the rotating (1500 RPM, 20 cm diameter) round washing brush. The rational working sequences enables one person to process 300-400 fish per hour.
The new reworked and improved version (wall- and stand models) have a gutting head which can be removed without tools and is dismantled in seconds, which allows good cleaning and disinfection. The  removable suction head fits to usual 120 l waste containers, which allows easy and fast replacing and deposition. These stainless steel gutting devices are delivered complete as table, wall or stand units with or without compressor and vacuum cleaner and with or without round rinsing brush.

This robust fish processing machine (for fishes (like trout, charr, bass, mackerel and herring) is made from stainless steel. A main point at development was the removement of complicated and failing technique. The compact machine (LxWxH 2,6x0,6x1,9 m, weight 350 kg) is nearly maintenance free. Complicated and expensive engagements are not necessary and the function via a button allows for rentable gutting (removement of intestines and gills). The running speed of the machine is adjustable, to allow to feed the machine with the fish up to 3000 pc./h with a weight between 150 and 1200 g (max. adapted to the double size difference e.g. 300-600 g). The water demand is about 500 l/h, air pressure min. 6 bar, electricity 1,2 kw/h 380 V/50 Hz (others on request). As accessories a feeding tank (before the machine) and a control sunk (after the machine) is available.

This fish scaling device is well protected from spray water, safe in operation and securely insulated, tested to 4000 V. The 230 V/50 Hz ICE standard 0,1 kw motor can be used continuously. The machine LxWxH of 23 x 24 x 19 cm with a weight of 9 kg, can be connected to a grounded or non-grounded wall socket. The cover of the laminated, flexible axle (160 cm long) consists of two layers of steel, one layer of insulating compound and one layer of plastic. The ball bearings in the top, with which the fish is scaled, are waterproof and all outside parts are rustproof. The device is supplied completely with handle, feet, 160 cm cable and plug.
As accessories a 6 mm strong plexiglas cover (LxWxH: 84x50x29 cm) is available, under which the fish can be scaled to avoid spraying of scales during scaling.

The robust, solidly constructed machines with belt drive offer perfect scaling technology, with their design (body in stainless steel, automatic time selector and control valve for reduced water consumption) and complete operational safety (auto-stop control, motor protection, restart protection).
Scaling takes place at the bottom and sides of the machine and offers the advantages of short (approx. 1-5 minutes per scaling cycle), low-noise scaling cycles and reduced water consumption. The water used in the scaling process is accumulated, so that the fish are thoroughly washed and a soft cushion of water is formed. This provides a flexible support and ensures that the scaling action is very gentle (fishes are not exposed to heavy bumps or impacts). The auto-stop control automatically stops the machine when the loading lid, top lid or release flap is opened. Gentle release is ensured because the machine restarts slowly and the start button must be pressed and held down, which is an added safety feature. An automatic shut down with manual restart guards against automatic start-up after a power failure. The scaling machines are supplied either with a karborundum drum for soft fish or small scales and with a round-hole drum for clams and hard fish or large scales. The machine is also available with a dirty water drain on the left-hand side (standard at the right side).

This compact machine allow to fillet all fish with up to a height of 110 mm and a weight of 100-1000 g fast and exact, without gutting the fish. The machine is made of stainless steel and easily cleaned with water. A height output (approx. 100-200 kg/h) and safety measurements allow a fast working. The compact design (LxWxH: 118 x 56 x 127 cm) and the low weight (approx. 88 kg) allow to use it on nearly any place.
With the rotating round-knife, first the head is cut off. Following, the fish is put in the machine head-cut first and belly-up. The fish is now forwarded by special grip belts to the round-knifes and 2 fillets are cut. The cut is adjustable, thus allowing a low waste of meat (Filet approx. 40-50 %). The belly bones have to cut of manually. The skin can also be removed manually or by skinning machines. A continuous cleaning is done by water spray nozzles. As accessories an (20-40 degree) adjustable forwarding belt (30 cm/s, wide 35 cm, length 140 cm) is available.

The transformation of fish into fillets offer an interesting value added profit margin and is directly depending with the filleting costs. This new generation of filleting machines now comes in different sizes, with dimensions suited to various fish sizes and species (Salmon, Trout, Charr, Whitefish, Perch, Pikeperch, Bass, Bream, Mackerel, Bonito, Tuna, Pollack etc.) permitting an efficient filleting of fish with minimum loss of product and high yield production of 50-80 % (salmonids) of splitted fillets. The productivity depends on the operator skill and process chain but is about 10-30 fish/min (approx. 1-3 t/h depending on fish size). The yield is directly depending on the state of the freshness and consistency of the fish, its fat content and maturity, as well as the cut of the head (I-, C- or V-cut). The simple mechanic solutions based on rigorous geometric principles in combination with a sensitive system to the thickness of each fillet, allow the machine to process fishes of various sizes (from 0.1 to 6.0 kg) without setting changes. The type number means the maximum fish height between anus and dorsum in mm, which the machine can handle. The smart design and sturdy construction (made in stainless steel) insure a long life to meet high conditions and norms of hygiene. All machines work with 2 or 4 blades (and 1 or 2 electric 400 Volt/50 Hz motors), are efficient and easy to clean and maintenance. Each machine has 2 wheels for easy movement. The standard height of the fish inlet is 80 cm and the fillet outlet 77 cm above the ground (other dimensions are possible on request). The beheaded and gutted fishes are loaded by hand into the machine. A 10-12 cm high transport belt carefully transfers (approx. 20 m/s) the fish to the round blades knifes which run not parallel but axial. The blades cut the fillets and separate the waste bones, thus saving over 50-75 % of the production time. The filleting machines are available with 2 or 4 blades either for the production of fillets with belly bones (ribs) or for the production of fillets without belly bones (ribs). The water requirement during filleting is about 300-500 l/h. A sharpening tool to use directly on the machine is available as accessory.

The following 2 blade types are available as standard:

The following 4 blade types are available as standard:

With this compact manual devices made from stainless steel, you can cut (cutting wide 9, 15 or 30 cm) fast and easy the Y-bones in fillets from bony rich fishes (like cyprinids, etc.). With this cutting in small distances (every 3-4 mm), the numerous Y-bones are chopped in very small pieces, so that they are no longer detected or dangerous in the fillets and can be eaten comfortably with the meat.
With a special adapter (available as accessories) you can also cut now the fillets in chips or stripes (and, for example serve it fried or on salad).
There is also a stripe or cube cutter available (i.e. for herring or salmon) which saves about 50 % of working time. The cutting distance can be chosen in steps of 4 mm, i.e. 8, 12, 16, 20 mm (please mention at order).

For removing of small and unwanted pin-bones from larger fresh, de-frosted or smoked filets (from about 150 g filet weight on, like: Salmons, Trout and Chars) different pinboners, from compact handheld devices to automatic band machines, are available. All machines (motor: 220-240 V, 50-60 Hz) are building from non-corrosive material to the quality and work with the same principles. The deboning unit can je adjusted in height, angel and speed. The belt can also be adjusted in speed. During operation, the machine units are kept clean with water or air. The unique mechanical picking action of these pinboners gently removes neck- and pin-bones (90-95 % at single- and 95-100 % at twin-systems), leaving fillets looking their best. Pinboning is not only removing the pin bones, but important is also not to break pin bones, not to bleach the fillet by water, and keep the fillet without gaping. They are very user and maintenance friendly and allow fast working. The pinboners are ideal for use by fish processors, fish mongers, fish shops, fish restaurants etc., giving excellent results with best possible yields and minimum weight loss. Optionally all machines are available as twin models (with 2 heads after each other). As accessories also a vacuum system is available which sucks away the bones and water from the fillets.

This fish skinning machines (skinning wide max. 430 mm, skinning speed approx. 19 m/min) are manufactured with the use of exclusive and high quality components and according to the newest technical and hygienic regulations. The are made of rust free stainless steel, the transport belts and rolls are made of plastic. Additional plates inside guarantee a very long live of the robust machines, which have no electronic parts which could become defect. All machines are easy to use and very maintenance friendly, which saves additional costs.
All models work with an 230/400 V (50/60 Hz) 0.75 kw (1.0 HP) motor and are equipped with a foot-switch, turnable plate, adjustable knives and a water spray unit. With all machines the filets can be either skinned with stump blade or also with sharp blade. At skinning with stump blade (silver skinning) nearly no waste is generated, at working with sharp blade (deep skinning), the skinning depth can be adjusted from 0 to 2-4 mm. Types C are equipped with a cog-roller (for fish with a tough or thick skin) and types S with cleaning-centrifuge (for fish with a soft or thin skin).
The Table- and Stand-models are open on top and the last ones have a beared knife-holder and fixable turning-wheels. The Band-models are suitable for large quantities and guarantee highest security during working, because they are switched off if the cover is opened. The skinning depth can be adjusted here from 0 to 5 mm. They have a beared and from outside adjustable pressure unit (opening height max. 70 mm), which adapts automatically to the filets and is available with different performance depending on the fish species (soft wheels, hard roller for salmon or soft balloon). Optionally, the band-models can be equipped with special designed curved blades, which allow in one working process to skin and remove the red-brown muscle segments along the sides of the sensory canal from fresh or smoked filets completely which was one of the most difficult problem during normal skinning by hand. Additionally they have a removable charging and forwarding belt.

This slicers are based on a proven combination of a sturdy ground machine and a perfect slicing glide. Due to the good quality and the modern technique of the slicers the best slicing results are achieved with yield of approx. 99 %. The plate and glide is from stainless steel, the other parts are made from polished and eloxided aluminum. The blades are made of specially chromed steel and last very long. All this features allow a very economic operation for the processing fillets of various fish species. There are different slicing machines available, from the simple manual to the controlled automatic slicer (portion or double lane slicer on request).

At this table models the vacuum chamber and housing is made from stainless steel and the high transparent lid of acryl glass. An easy and automatic working process is possible through the analog process time control pane (and from type "B-35" on also through the digital sensor control with 10 programs). A gas injection system and soft-air ventilation is also possible from type "B-35" onward. The machines have a single sealing bar configuration (single time sealing-cutting system on request) and are also available with a double sealing bar configuration from type "B-42" onward.  The professional vacuum pump 230 V/50 Hz (vacuum time 10-60 seconds) and back ventilation guarantee a service friendly construction. A liquid insert-plate is available as accessories.

This scale ice makers are made of high quality stainless steel and plastics, have small dimensions and a high production capacity. They are easy to use and the innovative technique guarantees a stable quality of the flake ice and are highly economic. All machines are FCKW-free (R404a or on request also CO2), have adjustable feet and an automatic water remover. Other voltages, larger machines (also without refrigeration unit) on request. All models are also available with a liquidificator set on request, and as options are salt-dosing and automatic-cleaning systems available.
As accessories isolated storage containers for 70 to 1.300 kg ice are available, which keeps the ice cool and easy to use, even after longer storage. The 4 smaller units are also available with integrated storage container (40 mm isolated) for each 70 or 210 kg ice, where the ice machine is included above.

Our implements are produced by modern machines and they are installed and approved accurately by hand. Due to continuing further development and in close cooperation with the leading professional institutes and associations of fish- and meat industry, as well as due to many suggestions from application in gastronomy, this devices are the most matured smoker, a fact that is confirmed by the best cooks all over the world, as well as by FIMA (marketing institute of the fish industry), by many professional associations as for example VDK (association of cooks) and last but not least by many foreign unions and professional hotel schools.  This smokers with its approved technic are in operation worldwide. It is a product for special gastronomy as smoking is possible at any time in presence of the customer - also in delicatessen-shops, in the groceries store, at the butchers, at the party-service, restaurants, beer-gardens etc.
In the electronic pressure chamber grill and fumigator you can easily prepare hot or cold smoked specialties ready to serve within very short times. You can work with the oven in closed rooms - smoking indoors - always a pleasure. Fish and meat are not cooked directly by firewood or infrared heat, but indirectly by the hot air inside of the pressure chamber. The tightly closing door guarantees that only a very small amount of smoke and thus nearly no moisture are let out. Proper gravy will be preserved, which is a great advantage in comparison to other smoking processes. Fish is put, with its belly up, onto the special grates. Flat-fish, fillet, meat are smoked on the flat grids. Flavor and proper gravy will remain. Cooking without addition of grease, therefore low on calories. Constant temperature and optimal diffusion of smoke (pressure) will lead to a good cooking and a golden-brown color of the smoked food. After the timer has run off, smoke will deposit on the inside of the walls. The darker they are, the better the taste will be. The special heat-resisting sealing of the doors needs neither maintenance nor renewal. Very low energy costs, over 60% of cooking-terms you can grill and cook without electricity. The double-casing guarantees that no water can enter. All electric parts are protected. Both the interior and exterior of the smokers as well as tin-plates and grates are made of stainless steel. No rusting or loss of color and enamel. Very short pre-heating times and very low energy consumption due to completely insulated double-casing. Heating with thermostatic regulation, automatic timer. Switches and control lamps on the front side a design suitable for modern kitchen. A new version (HS-36) in Gastro-Norm (GN) is also available. Herewith all usual (GN 1/1 to 1/3) containers or grids from other kitchen equipment will also fit in this smoking oven (or visa versa). This allows easy and better use in the professional kitchen. The standard outfit consist of stainless steel vessel with smoke- and drip-pan, 1-2 racks and 1-2 grids as well as user manual with recipes.

With this smoker you will get a state-of-the-art and high-quality product finished through CNC-production, containing over 30 years of development and experience. Most remarkable features are simple operation and extremely compact design. With our special integrated smoke-gas-guidance, your smoke goods will get evenly cooked and aromatized. The smoke-gas-guidance takes place over an additional sheet metal in the back to the outlet (see function sketch). With this you will get an optimal use of the smoke, the temperature inside the oven is very evenly and the dripping of condensate onto your smoke goods is safely avoided. The aluminum coating offers advantages compared to other coatings as food-proofed and highly corrosion- and heat-resistant. Stainless steel is 100% corrosion-resistant, acid- and leach-resistant, easy to clean thus allow flexible use (smoking of fish, meat, sausages, poultry and savage meat in the same oven possible). This smokers are available in different sizes made of aluminum covered steel or stainless steel with interchangeable wood- or gas firing, for hot- and cold smoking of fishes as well meat and sausages. All smokers come complete with dry-drip-tub and bouncer. Additional smoking grids, roasts, spits or hooks, smoke pipes (130 mm diameter) also with rain cover are available as accessories.

Wood firing:
For cold-smoking, the burning box is filled with smoke-flour and the draft regulation is completely closed after lighting. The smoke-flour becomes carbonized and with a maximum fill of the burning box the oven smokes up to 15 hours.
For hot-smoking a fire is kindled in the burning-box. The temperature will be set by the draft regulation. As soon as the smoked goods are dry and cooked, the draft regulation is to be completely closed and the fire is covered with smoke-flour to get a good smoke development. You will get best smoked-results by using pure beech wood. More simple, more comfortable and above all more economically you will smoke your goods with the gas heater.

Gas heater:
Drying and cooking: With full power of the gas heater - without smoke-flour pan.
Smoking: Cutting down of the heater to half power and simply putting the filled smoke-flour pan on top of it. When the smoke development is completed, the gas heater is switched off and the smoke process is finished.

Good and consistent curing results appeal to your customers and widens your customer base best. This electrically (380 Volt/50 Hz) heated smoking devices have a capacity of 100-300 fishes (resp. 70-200 kg meat) per smoking time of 30-90 minutes. The 3 switchable (2/4/6 kw) heating coils with the precision thermostat, timer and thermometer produces heat and smoke for cooking and smoking slowly. A smoke pipe connection (120 mm), and the well double isolated (50 mm) walls and door prevents heat loss and makes curing possible also in closed rooms. The fish to be cured either be laid on the racks or hung on curing hooks on the racks. As accessories special curing hooks, racks and curing meal (wood chips) are available. A build in connection pipe for/and an external smoke generator (for cold smoking), as well as a smoke pipe regulation valve, smoke pipes and bows are available too. For a rational working, trolleys (WxDxH approx. 61x48x110-185 cm with 6-10 layers) and build in ramps are available.

Arctic Charr (Salvelinus alpinus) and Lake Trout (Salmo trutta lacustris):
The breeders origins from populations of alpine lakes. Suitable for stocking in alpine lakes, reservoirs and dams, as well as for the production of seafood. The fish are raised in netcages with live zooplankton and therefore are extremely vital and of high stocking value. A high growth rate as well as an excellent meat combined with a nice color and large sizes are main characteristics. Tests with tagged fish have shown that fingerlings of 3-5 cm is the most economic size for stocking, as the adaptation of much larger fingerlings to the lakes is more difficult.

Grayling (Thymallus thymallus) and Danube Salmon (Hucho hucho):
The breeders are caught in springtime in various rivers, reproduction and raising takes place in tanks with live zooplankton and later on also with dry food.

Pike Perch (Sander lucioperca) and Burbot (Lota lota):
The mother breeders are catched in lakes. Reproduction and raising of fingerlings with live plankton takes place in tanks with live zooplankton. Stocking of fingerlings with 3-4 cm is most economic and is more as enough in most waters.

Sturgeons (Acipenseridae):
After years of studies and experiments among most known sturgeon species and hybrids, now from our own broodstock are available -
Siberian Sturgeon (Acipenser baerii): An easy to keep sturgeon which is used mainly for aquaculture and caviar production (available from fertilized eggs to pregraded females).
Russian Sturgeon (Acipenser gueldenstaedtii): A beautiful sturgeon (light scutes on dark ground) which is well accepted as ornamental fish for garden ponds.
Ship Sturgeon (Acipenser nudiventris): A rare and interesting sturgeon which builds also freshwater resident populations (in the Ural and Danube rivers).
Sterlet (Acipenser ruthenus): A slow growing sturgeon which is mainly used for restocking (in the Danube River) but also for the aquarium trade (available also as albino).
Beluga (Huso huso): The "Caviar fish" with the best growth rate, within 2 years a weight of up to 10 kg can be obtained with a water temperature of 20° C.

In nature, reproductive development and spawning in finfish is controlled by environmental factors such as temperature, photoperiod, nutrition, water quality, and presence of spawning substrate. In aquaculture, it is not always possible or economically feasible to replicate natural conditions especially as many species are now grown some distance from their original geographic location. Thus, endocrine or a combination of endocrine and environmental manipulations are utilized to facilitate reproduction. In the last decade significant research has been conducted worldwide on ripening fish sexuality using various preparations.
Carp Pituitary Extract (CPE) are acetone dried pituitaries of carps, which are pulverized and can be used to speed up maturation (induced maturation) as well as the spawning process itself (induced spawning). Intramuscular injections are highly effective in increasing the incidence of spawning as well as possibly increasing egg take in certain species. The potential economic benefits of taking eggs earlier (or later) in a given season or in fact eliminating seasonality altogether in certain climates and regions are significant. Carp pituitary extract contains a variety of pituitary hormones, including gonadotropins, which are effective for the induction of final maturation and ovulation. CPE is administered in distilled water or physiological saline and injected intramuscularly at a dose of 1-10 Milligram/kg fish. Available in vials of 1 Gramm (= 1000 Milligram).

Eugénol (Clove-oil) is a very useful, natural and environmental friendly tranquilizer, which can be used for various fish species. A higher tolerance against longer exposure times gives a greater security and makes the application under practice condition much more easier. Because of the low dosage (30-50 ppm) there occurs also no alteration of the taste of the fishes. Available as pure oil in vials of 10 or 100 Milliliter.

We supply various chemicals for disinfection in aquaculture and aquaria. Some chemicals are in some countries only allowed for fish which are not used for human consumption, like eggs, spawners or ornamental fish.
The following chemicals are available:

Actomar for disinfection of equipment, fish and eggs;
Chloramine against gill diseases and Myxobacteria;
Copper sulfate against gill diseases and algae;
Virkon against bacterioses and viroses;

An European-wide 25 years' experience and know how in the field of aquaculture, longtime cooperation with important scientific institutes and researchers, worldwide contacts and the experience-exchange on numerous international congresses and symposiums are the base of our respectable and successful consulting in management of waters and fish stocks, and in planning and construction of production systems, not only for freshwater but also for brackish- and seawater.
In cooperation, our team can offer:

Natural waters:
Consulting in questions of water-management, composition of ecologic rational stocking-plans. Accompany (also scientifically) on restocking-projects for Sturgeons, Salmons, Trout, Pearlmussels a.s.o. Realizing of water-investigations and fishstock-examinations. Settlement of fishing-actions with electricity, seine- and gillnets in lakes and rivers. Planktoncatch- and stockanalysis for lakes, ponds, lagoons and fjords etc.
Management of fish-stocks in fresh- and seawater. Solutions for parasite-problems, slow growing fish-stocks or to low catch-quotes. Suggestions for high catch-compulsion. Breeder-catch, re-production and reward rearing of autochthone and sensible fish species and forms (with zooplankton).

Production systems:
Planning of farming and production systems for freshwater and marine fishes as well as shrimp. Calculation and preparation of economy- and feasibility-studies as well as water- and market analysis and project reports and funding proposals. Engineering in the field of aquaculture and marine. Construction of hatchery-, nursery-, netcage-, recirculation- and docking-systems. Management and marketing for fish production plants. Education and mediation of professional personnel for aquaculture and fishery.
We also developed a new economy-business plan model, based on a table calculation program (like MS Works, Excel or Lotus). You can enter all variables like: feeding rates an conversion factors, survival and selling rates, stocking density and tank sizes, prices etc. and it will calculate approximately forecast growth and stocks, investment and operation costs and all other requirements.

The Sturgeons and Paddlefishes (Acipenseriformes) of the World: Biology and Aquaculture.
By Martin Hochleithner and Jörn Gessner.
An extended, updated and reviewed third edition. Soft- or Hardcover, 248 pages.

The breeding and culture of sturgeons in captivity has advanced rapidly over the past several years. With recent developments, the requirements of the industry have changed, and the techniques used have also evolved and been adapted to meet these changing needs. Based on experience gained in the the former USSR, new technologies have been developed, and the background of sturgeon biology has been enlightened in many respects. This compendium is designed to close the information gap between scientists and practitioners. Its appeal will be far reaching since biologists, field technicians, hatchery operators and fish farmers, fisherman and fish enthusiasts, will all find a wealth of practical information relevant to their field of interest. The book has the style of a species synopsis coupled with everything anyone needs to know about the reproduction and culture of acipenserid fishes. It summarizes current knowledge on all sturgeon and paddlefish species worldwide and presents it as a practitioner-oriented working guide. It draws on the experience and research findings of the authors gained over more than two decades. The new, third edition has been updated, extended, and reviewed, and includes many new color illustrations. It value will be timeless.

Sturgeon Fishes (Acipenseriformes): Science as Art.
By Paul Vecsei and Martin Hochleithner.
Hardcover, 120 pages.

Sturgeon illustrator Paul Vecsei and sturgeon farmer Martin Hochleithner are both internationally well known specialists in the field of sturgeon research and aquaculture. In this volume, they showcase the numerous sturgeon species and highlight the plasticity of sturgeon morphology (both within and between species) using more than 130 detailed illustrations and many summary tables. The material in this book is the culmination of 5000 hours of scientific illustrations. Each illustration is of an individual fish and is extremely accurate. They are made in the technique of pointillism, a known fine-art technique. Each picture is made by small dots, which, when viewed for a distance, creates a very detailed rendition of shape and form. Sturgeon aficionados, sturgeon experts and art lovers will appreciate the collection of illustrations in this unique work.

The Bibliography of Acipenseriformes: With over 10000 References.
By Martin Hochleithner, Jörn Gessner and Sergej Podushka.
Available as searchable electronic version (on CD-ROM) or printed book version (over 500 pages).

This bibliography, which includes nearly all publications from around the world, and covers all Acipenseriforms and a range of topics, is intended to serve as a ready reference for researchers, fisheries managers, aquaculturists and conservationists who work with this ancient fish group. The numerous references are listed alphabetically by author(s) and chronologically by year(s), as the original title. Almost all sturgeon- and paddlefish species are threatened or endangered. Information on them is by no means complete, whether in fields related to sturgeon culture, biology, ecology or management. Due to the current rate of wild-stock exploitation and environmental degradation, the availability of new information might prove crucial for their survival. This is an attempt to disseminate information about work carried out to date, and to increase its availability.

The Bibliography of Acipenseriformes: Update of the 2000's.
By Martin Hochleithner, Jörn Gessner, Sergej Podushka, Mohammad Pourkazemi and Qiwei Wei.
An update for the years 2000-2009. Paperback, 280 pages.

This bibliography, which covers all Acipenseriforms and a range of topics, is intended to serve as a ready reference for researchers, fisheries managers, aquaculturists and conservationists who work with this ancient fish group. Almost all sturgeon- and paddlefish species are threatened or endangered. Information on them in any field is by no means complete, whether related to sturgeon culture, biology, ecology or management. In many aspects sturgeon biology is very different from that of other fishes, and techniques suitable for other species may not work with them. Due to the current rate of wild-stock exploitation, the availability of new information might prove crucial for their survival. This is an attempt to disseminate information about work carried out to date, and to increase its availability. This is the most important and comprehensive bibliography about Acipenseriformes, and includes nearly all publications from around the world. The references are listed alphabetically by author(s) and chronologically by year(s). This update includes the years 2000-2009. This update is already included in the bibliography on CD-ROM.