barbatus, Callichthys Quoy [J. R. C.] & Gaimard [J. P.] 1824:234 [Voyage autour du monde; ref. 3574] Fazenda da Japuhyba near Angra dos Reis, 22°59'S, 44°17'W, Rio de Janeiro, Brazil. Neotype: CAS 16006 [ex CAS-SU 68290]. Type catalog: Ferraris 2007:129 [ref. 29155]. Neotype designated by Nijssen & Isbrücker 1980:202 [ref. 6910]. Original type locality specified by Koerber & Reis 2020:4 [ref. 37463] as Rio Inhomirim, village of Inhomirim, city of Magé, state of Rio de Janeiro, Brazil, 22°34'34"S, 43°11'05"W. •Valid as Corydoras barbatus (Quoy & Gaimard 1824) -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:221 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Shimabukuro-Dias et al. 2004:141 [ref. 27796]). •Valid as Scleromystax barbatus (Quoy & Gaimard 1824) -- (Britto 2003:147 [ref. 27338], Britto & Reis 2005:481 [ref. 28458], Knaack 2007:36 [ref. 29221], Ferraris 2007:129 [ref. 29155], Ottoni et al. 2016:133 [ref. 34756], Britto et al. 2016:[9] [ref. 34806], Reis et al. 2020:465 [ref. 38364], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Scleromystax barbatus (Quoy & Gaimard 1824). Callichthyidae: Corydoradinae. Distribution: South America: coastal drainages from Rio de Janeiro to Santa Catarina states (Brazil). Habitat: freshwater.