Definition of topminnow in English:

topminnow

Line breaks: top|minnow

noun

An American killifish, often seen at the water surface.
  • Fundulus and other genera in the families Cyprinodontidae (or Fundulidae) (many species), and Poeciliidae (one or two species)
More example sentences
  • The males are less responsive to non-threatening fish like topminnows (family Fundulidae).
  • One form of aggressive behavior is dominance hierarchies, which are found in many groups (e.g. catfishes, minnows, cods, ricefishes, topminnows, cichlids, wrasses, blennies, and boxfishes).
  • The Gila topminnow historically occurred throughout the Gila River drainage in Arizona, and even into New Mexico and Mexico.

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