derbyi, Loricariichthys Fowler [H. W.] 1915:267, Fig. 4 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 67; ref. 15099] Rio Jaguaribe at Barro Alto, Brazil. Holotype: ANSP 39932. Paratypes: ANSP 39933 (1). Type catalog: Böhlke 1984:122 [ref. 13621], Ferraris 2007:270 [ref. 29155]. •Valid as Loricariichthys derbyi Fowler 1915 -- (Isbrücker 1980:126 [ref. 2303], Burgess 1989:445 [ref. 12860], Isbrücker et al. 2001:30 [ref. 25653], Isbrücker 2002:23 [ref. 27178], Ferraris in Reis et al. 2003:338 [ref. 27061], Ferraris 2007:270 [ref. 29155], Ramos et al. 2014:4 [ref. 35321], Reis et al. 2016:17 [ref. 34496], Melo et al. 2016:376 [ref. 35317], Koerber et al. 2022:50 [ref. 39235], Vieira et al. 2023:21 [ref. 40759], Limeira-Filho et al. 2024:7 [ref. 41573]). Current status: Valid as Loricariichthys derbyi Fowler 1915. Loricariidae: Loricariinae. Distribution: South America: Jaguaribe River basin (northeastern Brazil). IUCN (2022): Least Concern. Habitat: freshwater.