The Collaborative International Dictionary of English v.0.48:

Goatfish \Goat"fish`\, n. (Zool.)
   A fish of the genus Upeneus, inhabiting the Gulf of Mexico.
   It is allied to the surmullet.
   [1913 Webster]

WordNet (r) 3.0 (2006):

goatfish
    n 1: brightly colored tropical fishes with chin barbels [syn:
         goatfish, red mullet, surmullet, Mullus surmuletus]