orthostoma, Haplochromis Regan [C. T.] 1922:184, Fig. 9 [Proceedings of the Zoological Society of London 1922 (pt 1) (no. 9); ref. 3675] Lake Salisbury, Kyoga system, Uganda. Holotype (unique): BMNH 1912.10.15.67. •Valid as Haplochromis orthostoma Regan 1922 -- (Greenwood 1967:100 [ref. 7965], van Oijen et al. 1991:140 [ref. 20956]). •Valid as Pyxichromis orthostoma (Regan 1922) -- (Poll & Gosse 1995:277 [ref. 24781] as Pixichromis, Lippitsch & Kaufman 2003:95 [ref. 27727]). Current status: Valid as Pyxichromis orthostoma (Regan 1922). Cichlidae: Pseudocrenilabrinae. Distribution: Eastern Africa: east Kyoga system. Habitat: freshwater.