n. Any fish of the family Poeciliiidae, small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters, often used in mosquito control. Syn. -- topminnow, poeciliid fish, poeciliid. [ WordNet 1.5 ]
(n) small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters; often used in mosquito control, Syn.live-bearer, poeciliid, poeciliid fish
