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|Noun||1.||poeciliid fish - small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters; often used in mosquito control|
cypriniform fish - a soft-finned fish of the order Cypriniformes
Gambusia affinis, mosquitofish - silvery topminnow with rows of black spots of tropical North America and West Indies; important in mosquito control