noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any of the ray-finned fish in the taxonomic family Fundulidae.
2. 2
   freshwater fish of Central America having a long swordlike tail; popular aquarium fish wordnet
3. 3
   small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters; often used in mosquito control wordnet

Synonyms

All synonyms

hellerilive bearerlive-bearerpoeciliidpoeciliid fishswordtail

Etymology

From top + minnow, since they swim near the surface.

Related phrases

ray finned

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.