oligacanthus, Haplochromis Regan [C. T.] 1922:258 [Annals and Magazine of Natural History (Series 9) v. 10 (no. 57); ref. 3674] Ubanghi River at Bangi, Central African Republic. Holotype (unique): BMNH 1920.7.12.48. •Valid as Haplochromis oligacanthus Regan 1922 -- (van Oijen et al. 1991:155 [ref. 20956], Wamuini Lunkayilakio & Vreven 2010:280 [ref. 31038] in 'Haplochromis', Genner et al. 2022:42 [ref. 39254]). Current status: Valid as Haplochromis oligacanthus Regan 1922. Cichlidae: Pseudocrenilabrinae. Distribution: Central Africa. Habitat: freshwater.