Rainbowfish
From Freepedia
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The Rainbowfishes are a family of small, colourful freshwater fish that are found in northern and eastern Australia and New Guinea and some other nearby islands.
The dominant Rainbowfish genus and its many species derive their generic name Melanotaenia from the Ancient Greek Melano (=black) and taenia (=ribbon). Translated it means "black ribbon" and is a reference to the often striking black margins found on the soft dorsal and anal fins of Rainbowfish species.
Rainbowfish are popular aquarium fish along with Blue-eyes (Pseudomugil spp.), which are another small colourful fish found in a similar range and habitats. Rainbowfish populations in the wild have been severely affected by the aggressive introduced mosquitofish (Gambusia).
