Killifish

/ˈkɪlɪˌfɪʃ/

Synonyms

  • guppy
  • minnow
  • topminnow

Slang Meanings

Small fry
The local fishermen just catch small fry, like killifish, for bait.
Swamp fish
They call it swamp fish around here because they thrive in shallow waters.