A sweep net is for crowding fish in a fish-farming pen. The sweep net has a fine-mesh net. A collecting device is for free fish parasites in a fish pen, a system is for collecting free fish parasites in a fish pen, and a method is for calculating the effect of a treatment against an external fish parasite in which the fish is treated outside a fish pen.

A system is for in-situ monitoring and recording of fish health of fish in a fish cage. The system has at least one camera housing. The camera housing is provided with a camera group having at least two cameras arranged to take synchronized pictures for digital close-range photogrammetry. The system has a central data-processing unit, the central data-processing unit being arranged to calculate a three-dimensional model of an object photographed synchronously by the at least two cameras. The data-processing unit is arranged to report the number of structures deviating from the smooth surface of the object in the three-dimensional model.

A system is for in-situ monitoring and recording of fish health of fish in a fish cage. The system has at least one camera housing. The camera housing is provided with a camera group having at least two cameras arranged to take synchronized pictures for digital close-range photogrammetry. The system has a central data-processing unit, the central data-processing unit being arranged to calculate a three-dimensional model of an object photographed synchronously by the at least two cameras. The data-processing unit is arranged to report the number of structures deviating from the smooth surface of the object in the three-dimensional model.

A mobile quantitative feeding-spraying integrated system and method. The system includes at least one hull equipped with a propeller, a feeder housing fixedly arranged on the hull, a feed box arranged on the feeder housing, a flip assembly provided at an upper end of the feed box, a blanking device arranged in the feeder housing to quantitatively control the bait blanking amount, a casting device and a spraying device. An upper end of the blanking device is a feeding end, which supports and is connected to the lower end of the feed box. A lower end of the blanking device is the discharging end. An upper side of the casting device is connected with the lower end of the blanking device, and the lower side of the casting device is provided with a discharging end facing the aquaculture water body.

A mobile quantitative feeding-spraying integrated system and method. The system includes at least one hull equipped with a propeller, a feeder housing fixedly arranged on the hull, a feed box arranged on the feeder housing, a flip assembly provided at an upper end of the feed box, a blanking device arranged in the feeder housing to quantitatively control the bait blanking amount, a casting device and a spraying device. An upper end of the blanking device is a feeding end, which supports and is connected to the lower end of the feed box. A lower end of the blanking device is the discharging end. An upper side of the casting device is connected with the lower end of the blanking device, and the lower side of the casting device is provided with a discharging end facing the aquaculture water body.

The present disclosure relates generally to treatment reservoirs (155, 250, 260, 370) for delivering treatment compounds to an aquatic environment and systems configured for controlled release of a treatment compound in an aquatic environment. The present disclosure provides a treatment reservoir including a treatment compound and a delivery apparatus configured to release the treatment compound according to a desired release profile. The delivery apparatus may include a release media operatively associated with the treatment compound such that the release media is configured to release the treatment compound to the aquatic environment according to the desired release profile. The present disclosure further provides containment pens (115) and containment systems for containing aquatic organisms in an aquatic environment including at least one treatment reservoir including a treatment compound and a delivery apparatus operatively associated with the treatment compound to release the treatment compound to the aquatic environment according to a desired release profile.

The present disclosure relates generally to treatment reservoirs (155, 250, 260, 370) for delivering treatment compounds to an aquatic environment and systems configured for controlled release of a treatment compound in an aquatic environment. The present disclosure provides a treatment reservoir including a treatment compound and a delivery apparatus configured to release the treatment compound according to a desired release profile. The delivery apparatus may include a release media operatively associated with the treatment compound such that the release media is configured to release the treatment compound to the aquatic environment according to the desired release profile. The present disclosure further provides containment pens (115) and containment systems for containing aquatic organisms in an aquatic environment including at least one treatment reservoir including a treatment compound and a delivery apparatus operatively associated with the treatment compound to release the treatment compound to the aquatic environment according to a desired release profile.

A system is provided for automatically removing deceased fish from an aquaculture cage. The system may include an underwater robotic vehicle configured to traverse the aquaculture cage to collect mortalities. The mortalities, once collected, may be brought to a system dock and then removed from the cage.

A system is provided for automatically removing deceased fish from an aquaculture cage. The system may include an underwater robotic vehicle configured to traverse the aquaculture cage to collect mortalities. The mortalities, once collected, may be brought to a system dock and then removed from the cage.

A mobile quantitative feeding-spraying integrated system and method. The system includes at least one hull equipped with a propeller, a feeder housing fixedly arranged on the hull, a feed box arranged on the feeder housing, a flip assembly provided at an upper end of the feed box, a blanking device arranged in the feeder housing to quantitatively control the bait blanking amount, a casting device and a spraying device. An upper end of the blanking device is a feeding end, which supports and is connected to the lower end of the feed box. A lower end of the blanking device is the discharging end. An upper side of the casting device is connected with the lower end of the blanking device, and the lower side of the casting device is provided with a discharging end facing the aquaculture water body.