1.  wolffish(n = noun.animal) catfish, wolf fish - large ferocious northern deep-sea food fishes with strong teeth and no pelvic fins;
is a kind of blennioid, blennioid fish
is a member of anarhichas, genus anarhichas

2.  wolffish(n = noun.animal) lancet fish, lancetfish - large elongate scaleless oceanic fishes with sharp teeth and a long dorsal fin that resembles a sail;
is a kind of malacopterygian, soft-finned fish
is a member of alepisaurus, genus alepisaurus