A genus of small freshwater fish found in tropical South America, related to tetras and piranhas.
From New Latin, likely derived from a Tupian or indigenous South American language term for these small fish. Established in scientific nomenclature in the 19th century.
Copeia are among the tiniest fish that can have color-changing abilities, and some species are so small they were overlooked by scientists for decades—proving that the Amazon still holds zoological surprises!
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