davidsandsi, Corydoras Black [B.] 1987:74, Fig. [Practical Fishkeeping 1987; ref. 16219] Rio Unini, whitewater area of the Rio Negro, Brazil. Holotype: MZUSP 38632. Paratypes: MZUSP (3). Type catalog: Ferraris 2007:116 [ref. 29155] •Valid as Corydoras davidsandsi Black 1987 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:224 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:116 [ref. 29155], 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]). •Valid as Hoplisoma davidsandsi (Black 1987) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma davidsandsi (Black 1987). Callichthyidae: Corydoradinae. Distribution: South America: Negro River basin, Brazil. Habitat: freshwater.