Relationships of the Madagascan cichlid genus Paretroplus, with description of a new species from the Betsiboka River drainage of northwestern Madagascar

摘要

Paretroplus tsimoly, new species, is described from the Akalimilotrabe River, a north bank tributary of the Betsiboka River. The immediate relationships of P. tsimoly lie with P. nourissati (= Lamena nourissati) and P. dami, the latter being the typespecies of the genus Paretroplus. For this reason, Lamena Allgayer, 1998 is placed in synonymy with Paretroplus Bleeker, 1868. As currently recognized, Paretroplus comprises a clade of nine species whose closest relatives are the three species of east Asian genus Etroplus.