Pronunciation: (plat'ē-fish"), [key]
—pl. (esp. collectively) -fish, (esp. referring to two or more kinds or species) -fish•es.
any of several small, yellow-gray freshwater fishes of the genus Xiphophorus, esp. X. variatus, of Mexico: popular in home aquariums, in which the color varies widely. Also called moon platy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.