essequibensis, Cynopotamus Eigenmann [C. H.] 1912:403 [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] Potaro Landing, Guyana. Holotype: FMNH 53673 [ex CM 2146]. Paratypes: (8) BMNH 1911.10.31.437 (1), CAS 44219 [ex IU 12319] (2), FMNH 53674-75 (1, 3). Type catalog: Henn 1928:70 [ref. 12305], Ibarra & Stewart 1987:31 [ref. 12367]. •Valid as Cynopotamus essequibensis Eigenmann 1912 -- (Menezes 1976:30 [ref. 7073], Menezes 1987:8 [ref. 8072], Planquette et al. 1996:218 [ref. 22818], Lucena & Menezes in Reis et al. 2003:202 [ref. 27061], Menezes 2007:60 [ref. 29297], Borstein et al. 2022:16 [ref. 39507] as cf. essequibensis, Taphorn et al. 2022:14 [ref. 41297]). Current status: Valid as Cynopotamus essequibensis Eigenmann 1912. Characidae: Characinae. Distribution: South America: coastal drainages (Amapá/Brazil, Guyana, Suriname and French Guiana: Brazil, French Guiana, Guyana and Suriname). Habitat: freshwater.