elongatus, Oxydoras Boulenger [G. A.] 1898:424, Pl. 40 (fig. 4) [Transactions of the Zoological Society of London v. 14 (pt 7, no. 2); ref. 543] Rio Juruá, Brazil. Holotype (unique): BMNH 1897.12.1.47 [= 1971.4.13.1]. Type catalog: Ferraris 2007:174 [ref. 29155]. •Valid as Nemadoras elongatus (Boulenger 1898) -- (Burgess 1989:224 [ref. 12860], Sabaj & Ferraris in Reis et al. 2003:463 [ref. 27061], Ferraris 2007:174 [ref. 29155], Sabaj Pérez et al. 2014:143 [ref. 33303], Birindelli 2014:538 [ref. 33501], DoNascimiento et al. 2017:89 [ref. 35633], Meza-Vargas et al. 2021:22 [ref. 39298]). Current status: Valid as Nemadoras elongatus (Boulenger 1898). Doradidae: Doradinae. Distribution: South America: Amazon River basin (Brazil, Colombia and Peru). Habitat: freshwater.