serratus, Hypostomus Valenciennes [A.] in Cuvier & Valenciennes 1840:503 [Histoire naturelle des poissons v. 15; ref. 1008] Region around Paramaribo, Suriname. Holotype (unique): RMNH 3125. Type information: Boeseman 1972:304 [ref. 19698]. Type catalog: Ferraris 2007:286 [ref. 29155]. For locality information see Boeseman 1972:304 [ref. 19698]. •Valid as Pseudacanthicus serratus (Valenciennes 1840) -- (Isbrücker 1980:77 [ref. 2303], Burgess 1989:438 [ref. 12860], Le Bail et al. 2000:250 [ref. 24549], Isbrücker 2001:28, 31 [ref. 25653], Isbrücker 2002:27 [ref. 27178], Fisch-Muller in Reis et al. 2003:393 [ref. 27061], Ferraris 2007:286 [ref. 29155], Fisch-Muller et al. 2012:190 [ref. 31970], Chamon 2015:317 [ref. 33851], Chamon & Sousa 2016:13 [ref. 34852], Chamon & Costa e Silva 2018:507 [ref. 35821], Borstein et al. 2022:18 [ref. 39507], Taphorn et al. 2022:53 [ref. 41297]). Current status: Valid as Pseudacanthicus serratus (Valenciennes 1840). Loricariidae: Hypostominae. Distribution: South America: coastal drainages (French Guiana, Guyana and Suriname). Habitat: freshwater.