Mycteroperca bonaci

from WordNet (r) 3.0 (2006)

Mycteroperca bonaci
    n 1: large dark grouper with a thick head and rough scales [syn:
         {jewfish}, {Mycteroperca bonaci}]

from The Collaborative International Dictionary of English v.0.48

Bonaci \Bo`na*ci"\, n. [Amer. Sp. bonas['i], prob. from native
   name.] (Zool.)
   (a) A large grouper ({Mycteroperca bonaci}) of Florida and
       the West Indies, valuable as a food fish; -- called also
       {aguaji} and, in Florida, {black grouper}.
   (b) Also, any one of several other similar fishes.
       [Webster 1913 Suppl.]