cognatum, Aphyosemion Meinken [H.] 1951:255, Fig. [Die Aquarien- und Terrarienzeitschrift (DATZ) v. 4 (no. 10); ref. 12900] Kinshasa [Leopoldville], Democratic Republic of Congo. Syntypes: BMNH 1952.7.31.1-2 (2); ZMH 1213 (2 or 3). Type catalog: Wilkens 1977:159 [ref. 22013]. •Valid as Aphyosemion cognatum Meinken 1951 -- (Radda 1980:4 [ref. 31297], Woeltjes 1983:11 [ref. 30503], Wildekamp et al. 1986:208 [ref. 6198], Wildekamp 1993:132 [ref. 26378], Lazara 2001:17 [ref. 25711], van der Zee & Sonnenberg 2010:58 [ref. 31068], van der Zee & Sonnenberg 2011:84 [ref. 31317], van der Zee et al. 2018:86 [ref. 35718], van der Zee & Sonnenberg 2018:7 [ref. 36381], Stiassny et al. 2021:1688 [ref. 39000]). Current status: Valid as Aphyosemion cognatum Meinken 1951. Nothobranchiidae. Distribution: Western-central Africa: southern Congo River basin (Democratic Republic of Congo). Habitat: freshwater.