microlepis, Acanthocharax Eigenmann [C. H.] 1912:405, Pl. 61 (fig. 1) [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] Tumatumari, Guyana. Holotype: FMNH 54475 [ex CM 2138]. Paratypes: (68) BMNH 1911.10.31.434-436 (3); CAS 38547-49 [ex IU 12315-17] (10, 1, 5); FMNH 7510 (2), 53666 (10, 1 c&s), 53667-68 (2, 5), 69706 (3), 75144 (9); CAS-SU 21935 (2); MCZ 30116 (2); NMW 67140 (2); USNM 66109 [ex CM] (1); ZMA 110658 (1). Type catalog: Henn 1928:69 [ref. 12305], Böhlke 1953:21 [ref. 12291], Nijssen et al. 1982:13 [ref. 19236], Ibarra & Stewart 1987:4 [ref. 12367], Vari & Howe 1991:4 [ref. 19022]. •Valid as Acanthocharax microlepis Eigenmann 1912 -- (Lucena & Menezes in Reis et al. 2003:200 [ref. 27061], DoNascimiento et al. 2017:[7] [ref. 35679], Taphorn et al. 2022:13 [ref. 41297]). Current status: Valid as Acanthocharax microlepis Eigenmann 1912. Characidae: Characinae. Distribution: South America: Essequibo River basin (Guyana) endemic. Habitat: freshwater.