sea catfish

from WordNet (r) 3.0 (2006)

sea catfish
    n 1: any of numerous marine fishes most of which are
         mouthbreeders; not used for food

from The Collaborative International Dictionary of English v.0.48

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]