nigricaudatus, Amphilius Pellegrin [J.] 1909:67 [Bulletin du Muséum National d'Histoire Naturelle (Série 1) v. 15 (no. 2); ref. 14405] Ogowe River at Ngomo, Gabon. Syntypes: MNHN 1909-0014 to 0016 (3). Type catalog: Bertin & Estève 1950:35 [ref. 19575], Ferraris 2007:21 [ref. 29155] •Synonym of Amphilius brevis Boulenger 1902 -- (Skelton & Teugels 1986:55 [ref. 6192], Ferraris 2007:21 [ref. 29155], Skelton 2007:43 [ref. 29258]). •Valid as Amphilius nigricaudatus Pellegrin 1909 -- (Skelton 2007:763 [ref. 30030], Thomson et al. 2015:62 [ref. 33879], Thomson & Swartz 2018:299 [ref. 35935], Fermon et al. 2022:154 [ref. 39448]). Current status: Valid as Amphilius nigricaudatus Pellegrin 1909. Amphiliidae: Amphiliinae. Distribution: Western-central Africa: Cameroon and Gabon. Habitat: freshwater.