Topminnow - Definition
topminnow
n 1: small usually brightly-colored viviparous surface-feeding
fishes of fresh or brackish warm waters; often used in
mosquito control [syn: topminnow, poeciliid fish,
poeciliid, live-bearer]
2: freshwater fish of Central America having a long swordlike
tail; popular aquarium fish [syn: swordtail, helleri,
topminnow, Xyphophorus helleri]