cow-pilot

from The Century Dictionary.

• noun A fish, Pomacentrus saxatilis, of a greenish-olive color, with 5 or 6 vertical blackish bands rather narrower than their interspaces, common in the West Indies, and extending along the southern coast of the United States.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) A handsomely banded, coral-reef fish, of Florida and the West Indies (Pomacentrus saxatilis); -- called also mojarra.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A fish, the mojarra.