'Sea catfish' definitions:

Definition of 'sea catfish'

(from WordNet)
noun
Any of numerous marine fishes most of which are mouthbreeders; not used for food

Definition of 'Sea catfish'

From: GCIDE
  • Sea catfish \Sea" cat`fish\ Sea cat \Sea" cat`\ (Zool.) (a) The wolf fish. (b) Any marine siluroid fish, as Aelurichthys marinus, and Arinus felis, of the eastern coast of the United States. Many species are found on the coasts of Central and South America. [1913 Webster]