minutus, Hemicetopsis Eigenmann [C. H.] 1912:211, Pl. 23 (fig. 2) [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] Amatuk Cataract, Guyana. Holotype (unique): FMNH 53262 [ex CM 1728]. Type catalog: Henn 1928:82 [ref. 12305], Ibarra & Stewart 1987:44 [ref. 12367], Ferraris 2007:130 [ref. 29155]. •Valid as Hemicetopsis minutus Eigenmann 1912 -- (Burgess 1989:292 [ref. 12860]). •Valid as Pseudocetopsis minutus (Eigenmann 1912) -- (de Pinna & Vari 1995:3 [ref. 21651], Le Bail et al. 2000:146 [ref. 24549] as cf. minutus). •Valid as Pseudocetopsis minuta (Eigenmann 1912) -- (Vari & Ferraris in Reis et al. 2003:259 [ref. 27061], Vari et al. 2003:694 [ref. 27329]). •Valid as Cetopsidium minutum (Eigenmann 1912) -- (Vari et al. 2005:136 [ref. 28270], de Pinna et al. 2007:802 [ref. 29247], Ferraris 2007:130 [ref. 29155], Vari & Ferraris 2009:290 [ref. 30494], DoNascimiento 2016:539 [ref. 34727], Taphorn et al. 2022:45 [ref. 41297]). Current status: Valid as Cetopsidium minutum (Eigenmann 1912). Cetopsidae: Cetopsinae. Distribution: South America: Potaro River and middle portion of the Essequibo River (Guyana and ?Venezuela). Habitat: freshwater.