A method of identifying fertilized fish eggs (200) in a sample of eggs (104) taken from a batch of incubating fish eggs is disclosed. The method includes the steps of treating the sample, within a period of time from initial fertilization of the batch, with a fixative (106) bringing an outer membrane of the eggs at least partly transparent and/or a blastodisc of the eggs at least partly opaque. The method further includes the step of capturing at least one image of individual eggs of the sample depicting the blastodisc of the egg, analysing the at least one image for detecting divided cells in the blastodisc, and identifying each egg associated with an image showing divided cells in the blastodisc as a fertilized egg. An associated system and a fish egg analysis apparatus are also disclosed.

A method and lighting system for promoting survival of larvae from a plurality of eggs within a containment unit. The lighting system includes at least one lighting device emitting light energy in a pre-determined narrow range of wavelengths and a pre-determined lighting intensity that promotes the survival of the larvae within the containment unit.

A method and lighting system for promoting survival of larvae from a plurality of eggs within a containment unit. The lighting system includes at least one lighting device emitting light energy in a pre-determined narrow range of wavelengths and a pre-determined lighting intensity that promotes the survival of the larvae within the containment unit.

An energy efficient aquaculture system combining mixed-cell and raceway configurations. The system comprises a raceway tank, a raceway channel, a first water purification subsystem, and a second water purification subsystem. The system may include one or more of a hatching subsystem, a nursery subsystem, a feeding subsystem, a finishing subsystem, and a fish pumping system for transfer of fish between raceway tanks. A method of growing fish for commercial production using the aquaculture system is also provided.

An energy efficient aquaculture system combining mixed-cell and raceway configurations. The system comprises a raceway tank, a raceway channel, a first water purification subsystem, and a second water purification subsystem. The system may include one or more of a hatching subsystem, a nursery subsystem, a feeding subsystem, a finishing subsystem, and a fish pumping system for transfer of fish between raceway tanks. A method of growing fish for commercial production using the aquaculture system is also provided.

A method for incubating an aquatic species includes introducing fertilized eggs of the aquatic species into a screened incubation container, introducing the screened incubation container into a vessel of an incubation module, circulating clean oxygenated water through the incubation module vessel, transferring successfully fertilized eggs from the incubation module vessel to an upweller of a hatching module, circulating clean oxygenated water through the upweller, transferring larvae that swim out of the upweller into a tray of a larvae holding module, circulating clean oxygenated water through the larvae holding module, transferring larvae that grow into a juvenile growth stage from the larvae holding module to a tray of a juvenile holding module, circulating clean oxygenated water through the juvenile holding module, and releasing juveniles from the juvenile holding module after a predefined growth period or after the juveniles grow to a predetermined size.

A method for incubating an aquatic species includes introducing fertilized eggs of the aquatic species into a screened incubation container, introducing the screened incubation container into a vessel of an incubation module, circulating clean oxygenated water through the incubation module vessel, transferring successfully fertilized eggs from the incubation module vessel to an upweller of a hatching module, circulating clean oxygenated water through the upweller, transferring larvae that swim out of the upweller into a tray of a larvae holding module, circulating clean oxygenated water through the larvae holding module, transferring larvae that grow into a juvenile growth stage from the larvae holding module to a tray of a juvenile holding module, circulating clean oxygenated water through the juvenile holding module, and releasing juveniles from the juvenile holding module after a predefined growth period or after the juveniles grow to a predetermined size.

An enclosed incubation system for production of trout fish is disclosed. The incubation system includes: an ultraviolet unit to disinfect water prior to entering the system, a disinfecting tank to disinfect water, a plurality of water tanks to supply water, a water heater, a plurality of fish tanks, a plurality of inlet and outlet valves, a plurality of canals, a first and a second aeration pump to aerate the plurality of the fish tanks.

An enclosed incubation system for production of trout fish is disclosed. The incubation system includes: an ultraviolet unit to disinfect water prior to entering the system, a disinfecting tank to disinfect water, a plurality of water tanks to supply water, a water heater, a plurality of fish tanks, a plurality of inlet and outlet valves, a plurality of canals, a first and a second aeration pump to aerate the plurality of the fish tanks.

The disclosure relates to the technical field of aquaculture, and more particularly to a fish breeding device provided with a magnetizer and a method for accelerating normal propagation and growth speeds of fishes. The fish breeding device includes a box body, a controllable partition plate, an extraction pump, and the magnetizer; the controllable partition plate is arranged in the box body and used for dividing the inner space of the box body into a feeding area and a non-feeding area; the extraction pump is arranged on the controllable partition plate and used for exchanging the water body in the feeding area with the water body in the non-feeding area; the magnetizer is arranged on the outer wall of the box body corresponding to the feeding area, and used for magnetizing the water body of the feeding area. In the disclosure, fish eggs are further hatched by the magnetized water. An adjustable magnetic field is utilized to act on fishes in development so that the fishes normally propagate and grow without causing the problems of retarded embryo development, stagnation, deformity, and the like. Meanwhile, pollutants generated in a feeding process can be purified, the utilization rate of feed put in a breeding process is increased, intermittent magnetization is adopted, and the consumption of electric energy is reduced.