Pronunciation: (mOOn'fish"), [key]
—pl. (esp. collectively) -fish, (esp. referring to two or more kinds or species) -fish•es.
1. Also called horsefish, horsehead. any of several silvery marine fishes of the genus Selene, having a very compressed body and inhabiting shallow coastal waters.
2. the opah.
3. any of various other rounded, silvery fishes.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.