rainbow fish

A form of rainbowfish — Any of the small colourful freshwater fish in the family Melanotaeniidae, native to northern and eastern Australia, New Guinea and Indonesia.

Similar
guppyLebistes reticulatus
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Meanings

nounrainbow fish (plural rainbow fishes or rainbowfish)

plural rainbow fishes · plural rainbowfish

  1. alternativeAlternative form of rainbowfish.

Synonyms & antonyms

nounsmall freshwater fish of South America and the West Indies; often kept in aquariums

Similar
guppyLebistes reticulatus
Broader
cyprinodont
Also see
guppy

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

rainbow fish. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/rainbow%20fish

MLA

“rainbow fish.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/rainbow%20fish. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “rainbow fish,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/rainbow%20fish.

Source: rainbow fish on Wiktionary, CC BY-SA 4.0.