A device for grading aquatic organisms is disclosed. The device includes a pump, a grader, two or more receptacles for receiving aquatic organisms from the grader, a counter, and a control system. The grader comprises a rotating barrel with a plurality of chambers, a bottom part of each of the plurality of chambers having an adjustable slit. The control system is designed to adjust at least one of a rotation rate of the grader or a slit setting of the grader based on information from the counter.

A device for grading aquatic organisms is disclosed. The device includes a pump, a grader, two or more receptacles for receiving aquatic organisms from the grader, a counter, and a control system. The grader comprises a rotating barrel with a plurality of chambers, a bottom part of each of the plurality of chambers having an adjustable slit. The control system is designed to adjust at least one of a rotation rate of the grader or a slit setting of the grader based on information from the counter.

Implementations of energy harvester systems may include: an accumulator having an air bladder separated from water by a membrane; one or more hydro turbines coupled with the accumulator; two or more check valves each coupled with one of the one or more hydro turbines; a system battery coupled to the power conditioner; and an electronic load coupled to the system batter through the power conditioner; wherein the two or more check valves are configured to be in contact with water.

Implementations of energy harvester systems may include: an accumulator having an air bladder separated from water by a membrane; one or more hydro turbines coupled with the accumulator; two or more check valves each coupled with one of the one or more hydro turbines; a system battery coupled to the power conditioner; and an electronic load coupled to the system batter through the power conditioner; wherein the two or more check valves are configured to be in contact with water.

The present invention is directed to a first farming plant including a central tank and one or more surrounding tanks, where the central tank is used for water treatment and the one or more surrounding tanks are used for the farming of fish. The fish farming plant may also include one or more flow applicators, whereby the flow rate of the water in the surrounding tanks are individually independent of the water exchange rate. The fish farming plant may include several movable permeable section walls in each of the surrounding tanks dividing each surrounding tank into tank sections. Each surrounding tank is equipped with one or two outlets and one or two inlets, and a substantially horizontal/laminar flow structure of the water in each one of the surrounding tanks is provided.

The present invention is directed to a first farming plant including a central tank and one or more surrounding tanks, where the central tank is used for water treatment and the one or more surrounding tanks are used for the farming of fish. The fish farming plant may also include one or more flow applicators, whereby the flow rate of the water in the surrounding tanks are individually independent of the water exchange rate. The fish farming plant may include several movable permeable section walls in each of the surrounding tanks dividing each surrounding tank into tank sections. Each surrounding tank is equipped with one or two outlets and one or two inlets, and a substantially horizontal/laminar flow structure of the water in each one of the surrounding tanks is provided.

An automated aquatic animal processing device includes an aquatic animal guideway, a camera positioned proximate to the aquatic animal guideway, a data storage containing one or more aquatic animal reference image, a processor communicably coupled to the camera and the data storage, and a power supply connected to the camera, the processor and the data storage. The camera captures a target image of an aquatic animal entering, within or exiting the aquatic animal guideway. The processor receives the target image from the camera, determine an identity of the aquatic animal by comparing the target image to the one or more aquatic animal reference images, and causes the aquatic animal to be captured, exterminated/euthanized or released based on the identity of the aquatic animal.

An automated aquatic animal processing device includes an aquatic animal guideway, a camera positioned proximate to the aquatic animal guideway, a data storage containing one or more aquatic animal reference image, a processor communicably coupled to the camera and the data storage, and a power supply connected to the camera, the processor and the data storage. The camera captures a target image of an aquatic animal entering, within or exiting the aquatic animal guideway. The processor receives the target image from the camera, determine an identity of the aquatic animal by comparing the target image to the one or more aquatic animal reference images, and causes the aquatic animal to be captured, exterminated/euthanized or released based on the identity of the aquatic animal.

An imaging plate includes a plurality of wells individually accommodating little fishes, and the little fishes inside the wells are imaged from bottom portions of the wells. In order to adjust imaging posture or imaging positions of the little fishes inside the wells, an imaging little fish management device includes a water unit which supplies and discharges water into and from each well of the imaging plate. The water inside each well flows through a discharge hole provided laterally at a lowermost portion of each well. The water unit is also used to breed the little fishes of the wells of the imaging plate.

An imaging plate includes a plurality of wells individually accommodating little fishes, and the little fishes inside the wells are imaged from bottom portions of the wells. In order to adjust imaging posture or imaging positions of the little fishes inside the wells, an imaging little fish management device includes a water unit which supplies and discharges water into and from each well of the imaging plate. The water inside each well flows through a discharge hole provided laterally at a lowermost portion of each well. The water unit is also used to breed the little fishes of the wells of the imaging plate.