Author: (Collett, 1875)
FBname: Norway bullhead
Comments: Found on hard bottoms (gravel or shells) or among algae with temperatures ranging below 0°C.  Feeds on small crustaceans (amphipods, decapods) and fishes.  Spawns in early spring.  Eggs demersal, in clumps on bottom, diameter 2 mm; larvae pelagic (Ref. 4698).