machadoi, Hemigrammocharax Poll [M.] 1967:125, Fig. 53 [Publicações Culturais, Companhia de Diamantes de Angola (DIAMANG), Lisboa No. 75; ref. 3528] Nharicumbi village, Longa River, tributary of Luena River, Angola. Holotype: MD 5579. Paratypes: MD 5579 (7), MRAC 159969-72 [ex MD] (4). Type catalog: Derijst 1991:46 [ref. 21528]. •Valid as Hemigrammocharax machadoi Poll 1967 -- (Daget & Gosse 1984:194 [ref. 6185], Skelton 1993:196 [ref. 24071], Skelton 2001:196 [ref. 27406] from key, Marshall 2011:126 [ref. 31755], Jerep & Vari 2013:31 [ref. 32557]). •Valid as Nannocharax machadoi (Poll 1967) -- (Jerep et al. 2014:368 [ref. 33246], Jerep & Vari 2014:48 [ref. 33325], Bruton et al. 2018:54 [ref. 36373], Skelton 2019:234 [ref. 36564], Bragança et al. 2020:[6] [ref. 37879], Musschoot 2024:347 [ref. 40817]). Current status: Valid as Nannocharax machadoi (Poll 1967). Distichodontidae. Distribution: Southern Africa: Zambezi River basin, Zambia and Angola. Habitat: freshwater.