One of the mysteries of the English language finally explained.
Any of a number of small brightly coloured fish of warm waters.
an Australian freshwater fish (genus Melanotaenia, family Melanotaenidae).
('Celebes rainbowfish') a freshwater fish native to Sulawesi and popular in aquaria (Telmatherina ladigesi, family Atherinidae).
- ‘Surface feeders such as rainbowfish will benefit greatly from feeding vinegar eels, but a lot of cichlid fry are bottom feeders.’
- ‘Visual cues alone allow for the expression of a preference for familiars in guppies and rainbowfish.’
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