alcalica, Tilapia Hilgendorf [F. M.] 1905:407 [Zoologische Jahrbücher, Abteilung für Systematik, Geographie und Biologie der Tiere (Jena) v. 22 (no. 4); ref. 15364] Ndadalani at the Nguruman Salt Lake [now Lake Natron], Tanzania. Lectotype: ZMB 16337 (40.5 mm). Paralectotypes: BMNH 1905.7.25.29-31 (now 4), ZMB 31905 [ex ZMB 16377] (4). Lectotype selected by Seegers & Tichy 1999:103 [ref. 23790]. •Valid as Alcolapia alcalica (Hilgendorf 1905) -- (Seegers et al. 2003:42 [ref. 28087] as alcalicus, Seegers 2008:154 [ref. 29830]). •Valid as Oreochromis alcalicus (Hilgendorf 1905), valid subspecies alcalicus -- (Trewavas 1982:12 [ref. 39521]). •Valid as Oreochromis alcalicus (Hilgendorf 1905) -- (Trewavas & Teugels 1991:307 [ref. 20954], Seegers & Tichy 1999:101 [ref. 23790], Ford et al. 2019:223 [ref. 36713]). Current status: Valid as Oreochromis alcalicus (Hilgendorf 1905). Cichlidae: Pseudocrenilabrinae. Distribution: East Africa: Tanzania and Kenya. Habitat: freshwater.