essequibensis, Astyanax Eigenmann [C. H.] 1909:17 [Annals of the Carnegie Museum v. 6 (no. 1); ref. 1222] Tumatumari, Potaro River, Essequibo, Guyana. Holotype: FMNH 53519 [ex CM 1018]. Paratypes: (174, CM and IU) BMNH 1911.10.31.321-325 (5), .326-327 (2); CAS 39144-46 [ex IU 11721-23] (24, 1, 25); FMNH 7454 (5), 52685-87 (26, 1, 1), 52869 (1), 52962 (26), 71289 (20); MCZ 29958 (2); NMW 62766 (5); CAS-SU 21956 (5); USNM 66107 (now 4); ZMA 101010 (3). Type catalog: Henn 1928:60 [ref. 12305], Böhlke 1953:22 [ref. 12291], Nijssen et al. 1982:14 [ref. 19236], Ibarra & Stewart 1987:12 [ref. 12367], Vari & Howe 1991:6 [ref. 19022]. •Valid as Astyanax essequibensis Eigenmann 1909 -- (Géry et al. 1996:8 [ref. 22155]). •Valid as Jupiaba essequibensis (Eigenmann 1909) -- (Zanata 1997:124 [ref. 24112], Buckup in Reis et al. 2003:142 [ref. 27061], Pereira & Lucinda 2007:54 [ref. 29302], Netto-Ferreira et al. 2009:65 [ref. 30519]). Current status: Valid as Jupiaba essequibensis (Eigenmann 1909). Characidae: Stethaprioninae. Distribution: Essequibo River basin, Guyana. Habitat: freshwater.