usongo, Nannocharax Dunz [A. R.] & Schliewen [U. K.] 2009:10, Figs. 5a-c, 6 [Zootaxa No. 2028; ref. 30114] Cross River at Mamfé, downriver road bridge, South-West Province, 5°46'0.00"N. 9°18'38.00"E, Cameroon. Holotype: ZSM 35732 [ex ZSM 35733]. Paratypes: MRAC 88-53-P-116-128 (13), ZSM 35733 (9 now 8). Plus additional non-type material. Type catalog: Neumann 2011:254 [ref. 31652]. •Valid as Nannocharax usongo Dunz & Schliewen 2009 -- (Moritz 2010:289 [ref. 30684], Jerep et al. 2014:368 [ref. 33246], Jerep & Vari 2014:49 [ref. 33325], Musschoot 2024:351 [ref. 40817]). Current status: Valid as Nannocharax usongo Dunz & Schliewen 2009. Distichodontidae. Distribution: Western-central Africa: Cross River drainage, Cameroon; plus one specimen questionably included from Nigeria. Habitat: freshwater.