Rheocles vatosoa is a species of rainbowfish in the subfamily Bedotiinae, the Madagascar rainbowfishes. It is endemic to Madagascar. Its natural habitat is the Lokoho River basin.Stiassny & Loiselle, 2002.Rheocles vatosoa, a new species of freshwater rainbowfish (Atherinomorpha: Bedotiidae) from the Lokoho River basin in Northeastern Madag It is threatened by habitat loss.
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