potaroensis, Myoglanis Eigenmann [C. H.] 1912:159, Pl. 14 (fig. 1) [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] Creek at Tukeit, Guyana. Holotype: FMNH 53333 [ex CM 1664]. Paratypes: (31) BMNH 1911.10.31.66 (1); CAS 60161 [ex IU 12048] (4), 60240-42 [ex IU 12049-51] (2, 2, 2); FMNH 7380 (1), 53214-15 (4, 2), 53566-68 (1, 1, 1), 59590 (4); MCZ 30082 [ex CM 1665] (1); NMW 45326 (1); CAS-SU 21932 (1); USNM 66225 [ex CM 1665] (1). Type catalog: Henn 1928:76 [ref. 12305], Böhlke 1953:44 [ref. 12291], Ibarra & Stewart 1987:58 [ref. 12367], Ferraris & Vari 1992:34 [ref. 19771], Ferraris 2007:187 [ref. 29155]. Originally potaroënsis. Appeared first as name only in Eigenmann 1910:384 [ref. 1224]. •Valid as Myoglanis potaroensis Eigenmann 1912 -- (Burgess 1989:276 [ref. 12860], Chang 1999:437 [ref. 23800], Bockmann & Guazzelli in Reis et al. 2003:415 [ref. 27061], DoNascimiento & Lundberg 2005:39 [ref. 28255], Ferraris 2007:187 [ref. 29155], Taphorn et al. 2022:49 [ref. 41297]). Current status: Valid as Myoglanis potaroensis Eigenmann 1912. Heptapteridae: Heptapterinae. Distribution: South America: Essequibo River basin (Guyana) endemic. Habitat: freshwater.