macracanthus, Centromochlus Soares-Porto [L. M.] 2000:282, Figs. 1-4 [Ichthyological Exploration of Freshwaters v. 11 (no. 3); ref. 25085] São Pedro, Río Negro, Amazonas, Brazil. Holotype: MZUSP 30620. Paratypes: INPA 6565 (1); MCP 21789 (2); MNRJ 18242 (2); MZUSP 52924 (6), 30605 (4); CAS-SU 58869-71 (2, 2, 11). Type catalog: Ferraris 2007:73 [ref. 29155]. •Valid as Balroglanis macracanthus (Soares-Porto 2000) -- (Calegari et al. 2019:[80] [ref. 36961], Meza-Vargas et al. 2021:22 [ref. 39298]). •Valid as Centromochlus macracanthus Soares-Porto 2000 -- (Ferraris in Reis et al. 2003:474 [ref. 27061], Ferraris 2007:73 [ref. 29155], Sarmento-Soares et al. 2013:798 [ref. 33029], Sarmento-Soares & Birindelli 2015:84 [ref. 33780], Grant 2015:2 [ref. 33806] in subgenus Balroglanis Grant 2015, Sarmento-Soares et al. 2017:[9] [ref. 35115], DoNascimiento et al. 2017:85 [ref. 35633], Sarmento-Soares & Martins-Pinheiro 2020:127 [ref. 37877], Coelho et al. 2021:162 [ref. 38196]). Current status: Valid as Centromochlus macracanthus Soares-Porto 2000. Auchenipteridae: Centromochlinae. Distribution: South America: Amazon River basin (Brazil, Colombia and Peru), and possibly upper Orinoco River. Habitat: freshwater.