Paretroplus tsimoly is a species of cichlid fish from the Betsiboka River basin in northwestern Madagascar.Sparks, J. S. (2008). Phylogeny of the Cichlid Subfamily Etroplinae and Taxonomic Revision of the Malagasy Cichlid Genus Paretroplus (Teleostei: Cichlidae). Bulletin of the American Museum of Natural History Number 314 :1-151 Like other members of the lamena group, it is a rheophile (although less so than Oxylapia polli). This relatively elongate Paretroplus reaches about in length, and is closely related to P. lamenabe and P. nourissati.
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