Pronunciation: (skwô'fish"),[key] —n., —pl.(esp. collectively)-fish,(esp. referring to two or more kinds or species)-fish•es. 1. any of several large, voracious cyprinid fishes of the genus Ptychocheilus, inhabiting rivers of the western U.S. and Canada: the Colorado squawfish, P. lucius, is endangered.
2. a viviparous perch, Embiotoca lateralis, living off the Pacific Coast of the U.S.