topminnow

(täpmin′ō)

noun

  1. livebearer
  2. killifish

See topminnow in American Heritage Dictionary 4

noun
  1. Any of several small New World freshwater fishes of the genus Fundulus, related to the killifishes.
  2. Any of various small viviparous New World fishes of the family Poeciliidae, of fresh or brackish waters.

Origin:

Origin: So called because it swims near the surface of the water

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