System for efficient salmon-feeding

August 24, 2018
By Ruby Gonzalez

Norwegian company CageEye says its namesake acoustic listening device enables salmon farmers to make precise decisions in determining salmon feeding optimization and reduce feed waste as a result.

The system’s latest version is adapted to bigger rearing units. CageEye has real-time and history control panel that provides a good overview of fish behavior in real time and fishing density in the chosen feeding area. As it records a history of past feeds, the farmer can track the history of the fish’s response to previous feedings.

“In terms of analyzing fish feeding activity in a long-term perspective, there is really no competitor to echo sound data for understanding how the fish respond. Analysis of camera recording may of course be used, but this would be extremely tedious and the data will not be as good,” Ole Folkedal, researcher at the Institute of Marine Research in Bergen, told Aquaculture North America (ANA).

Since CageEye collects data of the depth the fish reside, it can also be used in sea lice prevention, says Folkedal. “The fish show strong preferences for light and temperature and change depth accordingly. When using submerged lamps for postponing sexual maturation, the depth position of lamps can be used to attract the fish deeper, and, thus, also avoid the parasites.”

CageEye acoustic listening device uses sound data to understand fish feeding activity