topminnow, poeciliid fish, poeciliid, live-bearer -- (small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters; often used in mosquito control)
swordtail, helleri, topminnow, Xyphophorus helleri -- (freshwater fish of Central America having a long swordlike tail; popular aquarium fish)
(TTS Sound)
