Synonyms for Catfish (same or very similar meaning)
WordNet sense 1 (flesh of scaleless food fish of the southern United States; often farmed):
mudcatWordNet sense 2 (large ferocious northern deep-sea food fishes with strong teeth and no pelvic fins):
wolffishWordNet sense 3 (any of numerous mostly freshwater bottom-living fishes of Eurasia and North America with barbels like whiskers around the mouth):
siluriform fishFrom the ODE community, based on WordNetadd/edit