ruvumae, Tilapia Trewavas [E.] 1966:57 [Revue de Zoologie et de Botanique Africaines v. 74 (nos 1-2); ref. 9081] Upper Ruvuma, southeastern Africa. Holotype: BMNH 1966.8.22.1. Paratypes: BMNH 1966.8.22.2 (1). Additional material: BMNH and NMW. •Synonym of Oreochromis placidus (Trewavas 1941), but a valid subspecies ruvumae (Trewavas 1966) -- (Trewavas 1981:42 [ref. 39520], Trewavas & Teugels 1991:335 [ref. 20954], Ford et al. 2019:223 [ref. 36713]). Current status: Synonym of Oreochromis placidus (Trewavas 1941). Cichlidae: Pseudocrenilabrinae. Habitat: freshwater, brackish.