elegans, Corydoras Steindachner [F.] 1876:141 [93] [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4225] Amazon River at Tefé, Amazonas, Brazil. Lectotype: NMW 46729. Paralectotypes: BMNH 1889.11.14.55-60 (4 or 6); MCZ 7749 (91), 8205 (28), 36103 (2), 49375 (193, now 159), 89497 (24); MNHN 1989-0276/0279 (5); MNRJ 8547 (2); NMW 46730 (4), ?46731 (4), ?64691 (6); USNM 41531 (2), 41532 (2), 120252 (6), 216716 (10); ZMA 114.921 (10); ZMUC P30119-25 (7). Type catalog: Ferraris & Vari 1992:13 [ref. 19771], Miranda Ribeiro 1959:11 [ref. 10392], Ferraris 2007:116 [ref. 29155]. On p. 93 of separate. Lectotype selected by Nijssen & Isbrücker 1980:213 [ref. 6910]. •Valid as Corydoras elegans Steindachner 1876 -- (Nijssen & Isbrücker 1980:213 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:365 [ref. 12860], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061] dated 1877, Knaack 2002:52 [ref. 27224] dated 1877, Ferraris 2007:116 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:132 [ref. 34756], DoNascimiento et al. 2017:73 [ref. 35633], Bono et al. 2019:20 [ref. 36480], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus elegans (Steindachner 1876). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin (Brazil, Ecuador, Bolivia, Colombia and Peru). Habitat: freshwater.