noun
1. freshwater fish of Central America having a long swordlike tail; popular aquarium fish
• Syn: ↑swordtail, ↑helleri, ↑Xyphophorus helleri
• Hypernyms: ↑cyprinodont
• Member Holonyms: ↑Xyphophorus, ↑genus Xyphophorus
2. small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters; often used in mosquito control
• Syn: ↑poeciliid fish, ↑poeciliid, ↑live-bearer
• Hypernyms: ↑cypriniform fish
• Hyponyms: ↑mosquitofish, ↑Gambusia affinis, ↑platy, ↑Platypoecilus maculatus, ↑mollie, ↑molly
• Member Holonyms: ↑Poeciliidae, ↑family Poeciliidae
Useful english dictionary. 2012.