affinis, Petrocephalus Steindachner [F.] 1914:536 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Klasse v. 51 (no. 25); ref. 18910] Msola Brook, near Kiperege, Ulanga River system, Rufiji basin, Tanzania. Syntypes: (6) NMW 55117-18 (1, 3). Species illustrated and described in more detail in Steindachner 1915:62 [p. 4 of separate] Pl. 3 (fig. 3) [ref. 15072]. Objectively invalid; preoccupied by Petrocephalus affinis Sauvage 1879, replaced by Petrocephalus steindachneri Fowler 1958. •Synonym of Petrocephalus catostoma (Günther 1866). 1°Homonym. Current status: Synonym of Petrocephalus catostoma (Günther 1866). Mormyridae. Habitat: freshwater.