CageEye Mk.IV

Figure 1: CageEye Mk.IV with antenna.

CageEye provides a full overview of the underwater situation in a fish cage as well as enabling optimal feeding according to the appetite of the fish (figure 2 and 3).

Sonar technology makes it possible to observe the behavior of the fish independent of light and visibility.

CageEye facilitates feeding methods which reduces food waste.

  1. Interactive feeding — The operator controls the feeding manually according to the activity of the fish in the feeding area.
  2. The system may provide an automatic notification/alarm when the appetite of the fish decreases.

CageEye remembers behavior patterns through a day or a week. The operator can with ease study the behaviour history of the fish, instead of being bound to watch real-time events. An alarm can be triggered when significant deviations occur. These deviations may be caused by lack of oxygen, high temperature, theft or fish escaping the cage.

Simple installation – — the equipment will not touch the cage net.

Maintenance-free — algae will not grow on an active system.

Six channels makes it possible to simultaneously monitor multiple cages, as well as good coverage in large cages. The system covers depths down to 50 meters.

CageEye communicates over Ethernet. It can be connected to an existing network or transfer data through its own wireless data-link (figure 1). It can be powered by a 12 V lead-acid battery, 230 V land grid, or passive 12—24 V Power-Over-Ethernet (PoE).


CageEye has been developed in co-operation with the Institute of Marine Research in Norway. The first version was installed on Austevoll 25 years ago. The system has been adapted and modified over the course of many years. We have now managed to create a system we believe is mature for a commercial market, instead of being a tool for scientists in the field of fish behavior. Few technical solutions within aquaculture can document good results with more scientific articles or reports.

Some of them are listed below:

Image of decreasing appetite whith intensive feeding

Figure 2: Decreasing appetite when feeding intensively.

Image of decreasing appetite whith interval feeding

Figure 3: Decreasing appetite when feeding in intervals throughout the day.

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