preto, Sternarchogiton de Santana [C. D.] & Crampton [W. G. R.] 2007:393, Fig. 5 [Copeia 2007 (no. 2); ref. 29144] Toco Preto, Município de Tefé, 3°47.31'S, 64°59.91'W, Rio Tefé, Amazonas, Brazil. Holotype: MCP 37553. Paratypes: BMNH 1998.3.17.51-52 (2), 1998.3.17.53 (1), FMNH, INPA, MCP, USNM. Plus non-type specimens. Type catalog: Ferraris et al. 2017:[12] [ref. 35236]. •Valid as Sternarchogiton preto de Santana & Crampton 2007 -- (Cox Fernandes et al. 2009:206 [ref. 30178], de Santana & Vari 2010:161 [ref. 30740], Ferraris et al. 2017:[12] [ref. 35236], Bernt et al. 2018:474 [ref. 35797]). •Valid as Tenebrosternarchus preto (de Santana & Crampton 2007) -- (Bernt et al. 2020: [ref. 37457], Meza-Vargas et al. 2021:21 [ref. 39298]). Current status: Valid as Tenebrosternarchus preto (de Santana & Crampton 2007). Apteronotidae: Apteronotinae. Distribution: South America: Amazon and Orinoco basins (Brazil, Peru, Bolivia and Venezuela). Habitat: freshwater.