arnoldi, Pelmatochromis Boulenger [G. A.] 1912:263 [Annals and Magazine of Natural History (Series 8) v. 10 (no. 56); ref. 14835] Lower Niger River, Nigeria. Syntypes: BMNH 1912.2.2.10-12 (3). •Synonym of Thysochromis ansorgii (Boulenger 1901) -- (Daget 1991:480 [ref. 20947], Lévèque et al. 1991:145 [ref. 31367], Teugels & Thys van den Audenaerde in Lévêque et al. 1992:735 [ref. 21590], Walsh et al. 2019:9 [ref. 37073]). Current status: Synonym of Thysochromis ansorgii (Boulenger 1901). Cichlidae: Pseudocrenilabrinae. Habitat: freshwater.