groundfish

from WordNet (r) 3.0 (2006)

groundfish
    n 1: fish that live on the sea bottom (particularly the
         commercially important gadoid fish like cod and haddock, or
         flatfish like flounder) [syn: {groundfish}, {bottom fish}]

from The Collaborative International Dictionary of English v.0.48

groundfish \ground"fish\ (ground"f[i^]sh), n. sing. & pl.
   Fish that live on the sea bottom, especially commercially
   important gadoid fishes like cod and haddock or flatfish like
   flounder.

   Syn: bottom fish.
        [WordNet 1.5] groundhog