marginatus, Hypophthalmus Valenciennes [A.] in Cuvier & Valenciennes 1840:225, Pl. 439 [Histoire naturelle des poissons v. 15; ref. 1008] Cayenne, French Guiana. Lectotype: MNHN A-8961. Paralectotypes: MNHN A-8963 (1); RMNH D1932 (1, dry), D1933 (1, dry). Type information: Boeseman 1972:302 [ref. 19698]. Type catalog: Ferraris 2007:333 [ref. 29155]. For locality information see Boeseman 1972:302 [ref. 19698]. Lectotype selected by Littmann et al. 2021:187 [ref. 38412]. •Valid as Hypophthalmus marginatus Valenciennes 1840 -- (Ortega & Vari 1986:15 [ref. 9708], Burgess 1989:294 [ref. 12860], Chang & Ortega 1995:6 [ref. 24302], de Pinna 1998:321 [ref. 23847], López-Fernández & Winemiller 2000:39 [ref. 24443], Le Bail et al. 2000:150 [ref. 24549], Camargo & Isaac 2001:145 [ref. 27639], Lundberg & Littmann in Reis et al. 2003:436 [ref. 27061], Ferraris 2007:333 [ref. 29155], Barriga Salazar 2014:114 [ref. 35745], Sarmiento et al. 2014:167, 192 [ref. 35004], Littmann et al. 2015:160, 173 [ref. 33933], DoNascimiento et al. 2017:93 [ref. 35633], Careaga et al. 2020:78 [ref. 37774], Silvano et al. 2020:291 [ref. 38135], Littmann et al. 2021:187 [ref. 38412], Grant 2021:69 [ref. 38702]). Current status: Valid as Hypophthalmus marginatus Valenciennes 1840. Pimelodidae. Distribution: South America: Orinoco River basin and major rivers of the Guianas (Venezuela, Guyana, Suriname, French Guiana). Habitat: freshwater.