tarpon, Genycharax Eigenmann [C. H.] 1912:22 [Indiana University Studies No. 16 [sic No. 8]; ref. 1228] Cartago, Colombia. Holotype: FMNH 56018 [ex CM 4808]. Paratypes: (25, CM and IU) CAS 44271-73 [ex IU 12672-74] (4, 1, 2); FMNH 56019-21 (3, 2, 3), 69547 (5), 69779 (2); USNM 79207 (1). Type catalog: Henn 1928:64 [ref. 12305], Ibarra & Stewart 1987:38 [ref. 12367]. •Valid as Genycharax tarpon Eigenmann 1912 -- (Pavanelli in Reis et al. 2003:128 [ref. 27061], DoNascimiento et al. 2017:61 [ref. 35633]). •Valid as Astyanax tarpon (Eigenmann 1912) -- (Melo et al. 2024:29 [ref. 41541] in Acestrorhamphinae). Current status: Valid as Astyanax tarpon (Eigenmann 1912). Acestrorhamphidae: Acestrorhamphinae. Distribution: South America: upper Cauca River basin, Colombia. Habitat: freshwater.