Pronunciation: (pup'fish"), [key]
—pl. (esp. collectively) -fish, (esp. referring to two or more kinds or species) -fish•es.
any of several tiny, stout killifishes of the genus Cyprinodon, inhabiting marshy waters in arid areas of western North America: several species are endangered.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.