Cotylopus is a genus of gobies native to streams and rivers in Mauritius, Réunion, Mayotte, and Anjouan in the Comoros, which are all islands in the Western Indian Ocean off Africa.
Species The recognized species in this genus are: Cotylopus acutipinnis Guichenot, 1863 Cotylopus rubripinnis Keith, Hoareau & P. Bosc, 2005
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