The spotted catfish's habitat is above the ocean floor at the depths of 100-300 metres.  It reaches puberty at the age 6-7 years.  By that time it weighs 4-8 kilogrammes and is 70-90 centimetres long.  At the age of 25, it may reach 120 centimetres, and can get to 180 centimetres.  In the Barent Sea it spawns in June-July.  The catch of this species is counted with the catch of ocean catfish or wolffish in Iceland.