Cage culture of spotted wolffish (Anarhichas minor Olafsen)

Flat-bottom sea cages offer a cost-effective alternative for culture of bottom-dwelling fish. In an experiment lasting 428 days, spotted wolffish (Anarhichas minor Olafsen) grew equally fast when kept in tanks on land and in a flat-bottom sea cage at the same stocking density (increasing from 7.5 to 42 kg m− 2 during the experiment) and same water temperature. A lag phase of 1 month with negative growth was observed following transfer from tanks to the sea cage. The results confirm that flat-bottom sea cages may be an option for culture of this species.