Abstract: A gamefish attractor system is modular, having interconnects that are configured to attach a first cover assembly to a second cover assembly to produce two separate cover regions and also attach to a spawning bed. Each cover region has a pair of fins attached to a frame by the interconnects. The fins extend up from the floor of the body of water to provide cover or shelter for the gamefish. A cover assembly has a cover frame that includes frame extensions that extend from a first fin to a second fin. Two cover regions may share a fin to produce the adjacent cover regions. The frame extensions are coupled to the fins by interconnects that may be detachably attachable to the fin and to the frame extension. A cover frame may include a spawning tray wherein the interconnects couple the fins to the spawning tray to form a cover region.

Abstract: The embodied invention utilizes an incubation tray that is housed inside an outer assembly that protects incubating fish in the initial stages of their life cycle. The outer assembly is designed to allow water to flow into the incubation tray so there is a more natural environment for growth, and yet provide robust protection against predators. The outer assembly is designed to manage water flow around the incubation tray and prevent silt build up and ensure a stable position in a river. The goal is to re-establish a critical amount of new fish in a river where they have become sparce or extinct.

Abstract: A chilled fog incubator using ultrasonic disruption of water to maintain metabolite transfer for developing salomonid eggs, the incubator includes an incubation space, an air chamber, a sonication chamber, a control box having a pump, a chiller, a reservoir partition, a control switch panel, wheels, and specimen trays.

Abstract: A chilled fog incubator using ultrasonic disruption of water to maintain metabolite transfer for developing salomonid eggs, the incubator includes an incubation space, an air chamber, a sonication chamber, a control box having a pump, a chiller, a reservoir partition, a control switch panel, wheels, and specimen trays.

Abstract: It is an object of the invention to provide a method and an apparatus for processing a very large number of fish eggs for gene injection and so on with a superior performance. An egg case has an egg-arranging plate and a cover plate. The fish eggs are dropped into concave portions of the egg-arranging plate, when the cover plate opens the concave portions. The cover plates closes the concave portions after fish eggs are accommodated in the concave portions. The egg case is fixed on a table of an egg-arranging apparatus. water is supplied on the egg-arranging plate in the egg plate. A scanning nozzle sprays water on upper surface of the egg-arranging plate. After closing the concave portions with the cover plate, the egg case is inclined for dropping fish eggs remaining on the cover plate.

Abstract: It is an object of the invention to provide a method for processing a very large number of fish eggs for gene injection and so on, which employs a simple system with high performance and a reasonable construction expense. It is another object to provide the method having an water tank apparatus capable of producing a large number of fish eggs continuously. A large number of water tank groups having an independent drainage passage each is lighted up in turn with a predetermined interval. An egg-collecting case with a net bottom is set in the drainage passage connecting to the water tank group to which the lighting is started. The water tank group consists of a plurality of tank unit accommodating fishes each. Each book-shaped tank unit has a rectangular-shaped upper portion and a cone-shaped lower portion. Rotating water stream is formed in each tank unit.

Abstract: It is an object of the invention to provide a method and an apparatus for processing a very large number of fish eggs for gene injection and so on with a superior performance. An egg case has an egg-arranging plate and a cover plate. The fish eggs are dropped into concave portions of the egg-arranging plate, when the cover plate opens the concave portions. The cover plates closes the concave portions after fish eggs are accommodated in the concave portions. The egg case is fixed on a table of an egg-arranging apparatus. water is supplied on the egg-arranging plate in the egg plate. A scanning nozzle sprays water on upper surface of the egg-arranging plate. After closing the concave portions with the cover plate, the egg case is inclined for dropping fish eggs remaining on the cover plate.

Abstract: The present invention discloses a device for incubating fish and other test specimens and a farming process for fish and other animals, both of which use an innovative concept for creating a microgravity environment on earth as a way to increase the efficiency of farming/development of fish and other animals in different stages of development.

Abstract: A fertilized eggs collection apparatus for injecting genes, which is superior in safety and productivity. It is realized by simple structure. Fertilized eggs are collected from drainage with the fertilized egg in a water tank. The collection is synchronized for starting of illumination to the water tank. A probability that that feces included in the water is mixed in the collected fertilized eggs can hereby be reduced. Water including the fertilized eggs is accumulated on a fertilized-egg-holding-plate. The fertilized-egg-holding-plate has each concave portion holding one fertilized egg each. Water in the concave portions is drained from a through-hole. The fertilized-egg-holding-plate is accommodated in a case having a bottom plate portion. The case keeps water for the fertilized eggs. A shutter plate capable of sliding is disposed on the fertilized-egg-holding-plate. The shutter plate prevents that the fertilized eggs jump out from the concave portions of the fertilized-egg-holding-plate.

Abstract: A method for the mass production of fish belonging to the order of Cypriniforms, notably to the family of Cobitidae, from spawners which are raised in closed circuit.

Abstract: A method for reducing ammonia concentration in an aqueous medium caused by the presence of fish gill/urine discharge, fish faeces and uneaten organic fish-feed particulate matter in recirculating aquaculture tanks. Fish in fish tank water are remotely located or partially isolated from the fish tank water utilized by the sono-molecular-conversion apparatus. Transient cavitation-created, collapsing microsized bubbles generated in the fishless portion of the fish tank water completes ammonia nitrification, mineralization and denitrification therein.

Abstract: A breeding tank comprising at least two dish-like breeding tubs each having a breeding space and each having a tub bottom and an opening surrounded by a periphery of a top of each of the dish-like breeding tubs, the tub bottoms of all the dish-like breeding tubs are arranged in a mutually vertically stacking mode, and the opening of each lower dish-like breeding tub is larger than that of its-upper dish-like breeding tub, all the dish-like breeding tubs are made of transparent material except the lowermost dish-like breeding tub. The present invention thus can make multiple vertically stacking breeding spaces in a limited space for breeding aquatic animals such as fishes, shrimps and crustacea etc.

Abstract: A drum separator for separating brine shrimp eggs from a slurry containing an agglomeration of adult brine shrimp, brine shrimp eggs and debris includes a fluid source to maintain a slurry. The fluid source may be an internal spray jet disposed to spray against the slurry inside the drum for breaking up the agglomeration of adult brine shrimp, brine shrimp eggs and debris so that the brine shrimp eggs may pass through openings formed in the drum. An external spray jet is disposed to spray against the exterior surface of the drum for cleaning the adult brine shrimp and debris out of the openings in the drum. The internal spray jet is preferably an elongated pipe having a plurality of openings and is disposed inside the rotating drum. The external spray jet is preferably an elongated pipe with a plurality of openings and is disposed along the exterior of the rotating drum.

Abstract: An incubator (10) comprising a cylindrical tank (11) with a bottom wall (12) and a side wall (13). The tank is provided with a clean or regenerated water supply system (17), a waste water discharge system (18), a device (19) for altering the gas level to avoid supersaturation of gas in the water, a larva feed dispenser (20) and a device (21) for skimming the water surface. The tank further includes a member (22) arranged at the bottom of the tank for generating water currents therein, and a strainer (23) for preventing the larvae from entering the discharge system (18). The current generating member (22) comprises blades located beneath the supply system (17).

Abstract: A fish-cage incubator has a light source for attracting zooplankton therein a mesh barrier that admits zooplankton and excludes predators of fish larvae.

Abstract: A method for incubating eggs or larvae of fish, crustaceans, or related organisms. The eggs or larvae are located in depressions in the surface of a plate formed of an aqueous polymeric gel, and the surface is sealingly covered with a porous membrane capable of gas transport therethrough. The plate sealed with the membrane is placed in at least intermittent contact with water during the incubation period, and the eggs or larvae are separated from the plate and membrane after incubation is complete.