Gattungsbeschreibung: Greenwood, Peter Humphry. 1980. „Towards a phyletic classification of the ‚genus‘ Haplochromis (Pisces, Cichlidae) and related taxa. Part II; the species from lakes Victoria, Nabugabo, Edward, George and Kivu“. Bulletin of the British Museum (Natural History) Zoology Series. 39(1):1-101
Typusart: Haplochromis parorthostoma GREENWOOD, 1967
Beschriebene Arten:
Pyxichromis orthostoma (REGAN, 1922)
Pyxichromis parorthostoma (GREENWSOOD, 1967)