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|Noun||1.||family Poeciliidae - topminnows|
fish family - any of various families of fish
Cypriniformes, order Cypriniformes - an order of animals including almost entirely freshwater fishes: characins; loaches; carp; suckers; sometimes classified as a suborder of Ostariophysi
live-bearer, poeciliid, poeciliid fish, topminnow - small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters; often used in mosquito control