topminnow Meaning, Definition & Usage

  1. noun small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters; often used in mosquito control
    poeciliid fish; live-bearer; poeciliid.
  2. noun freshwater fish of Central America having a long swordlike tail; popular aquarium fish
    Xyphophorus helleri; helleri; swordtail.

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