rupununi, Astyanax Fowler [H. W.] 1914:242, Fig. 6 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 66; ref. 1390] Rupununi River, Guyana, 2°-3°N, 50°20'W. Holotype: ANSP 39328. Paratypes: ANSP 39329 (1, in jar with holotype). Type catalog: Böhlke 1984:53 [ref. 13621]. •Synonym of Astyanax bimaculatus (Linnaeus 1758) -- (Buckup in Reis et al. 2003:108 [ref. 27061], Mirande & Koerber 2015:2 [ref. 33698]). •Valid as Astyanax rupununi Fowler 1914 -- (Garutti 2003:2 [ref. 27817], Bertaco & Garutti 2007:28 [ref. 29172], Garutti & Langeani 2009:375 [ref. 30985], Lucena & Soares 2016:104 [ref. 34169], Taphorn et al. 2022:13 [ref. 41297]). Current status: Valid as Astyanax rupununi Fowler 1914. Acestrorhamphidae: Acestrorhamphinae. Distribution: South America: Rupununi River drainage (Guyana) endemic. Habitat: freshwater.