Species that contain: Characidium and steindachneri [ 3 ] records

catenatum, Characidium Eigenmann [C. H.] 1909:40 [Annals of the Carnegie Museum v. 6 (no. 1); ref. 1222] Warraputa, Guyana. Holotype: FMNH 52761 [ex CM 1153]. Paratypes: (14, CM and IU) BMNH 1911.10.31.162 (1); CAS 41194-95 [ex IU 11681-82] (5, 1); FMNH 7315 (1), 52762-63 (4, 1); MCZ 29930 (1); CAS-SU 21908 (1). Type catalog: Henn 1928:55 [ref. 12305], Böhlke 1953:23 [ref. 12291], Ibarra & Stewart 1987:22 [ref. 12367]. See Taphorn 1992:383 [ref. 23654]. •Synonym of Characidium steindachneri Cope 1878 -- (Buckup 1993:101 [ref. 20831], Buckup in Reis et al. 2003:91 [ref. 27061], Taphorn et al. 2006:5 [ref. 28733], Buckup 2024:303 [ref. 40817]). Current status: Synonym of Characidium steindachneri Cope 1878. Crenuchidae: Characidiinae. Habitat: freshwater.

ladigesi, Characidium Géry [J.] 1972:77, Pl. 6 (figs. 1-2) [Acta Humboldtiana (Series Geologica, Palaeontologica et Biologica Nr. 2) No. 2; ref. 1595] Río Villano, Ecuador. Holotype: ZMH H1864. Paratypes: ZMH H1865 (3, now 1). Type catalog: Wilkens 1977:156 [ref. 22013]. •Synonym of Characidium steindachneri Cope 1878 -- (Buckup 1993:101 [ref. 20831], Buckup in Reis et al. 2003:91 [ref. 27061], Buckup 2024:303 [ref. 40817]). Current status: Synonym of Characidium steindachneri Cope 1878. Crenuchidae: Characidiinae. Habitat: freshwater.

steindachneri, Characidium Cope [E. D.] 1878:688 [Proceedings of the American Philosophical Society v. 17 (no. 101); ref. 945] Amazon River, Peru. Holotype (unique): ANSP 21428. Type catalog: Böhlke 1984:54 [ref. 13621]. •Valid as Characidium steindachneri Cope 1878 -- (Ortega & Vari 1986:8 [ref. 9708], Buckup 1993:102 [ref. 20831], Buckup in Reis et al. 2003:91 [ref. 27061], Barriga Salazar 2014:106 [ref. 35745], Leitão & Buckup 2014:15 [ref. 33323], Sarmiento et al. 2014:185 [ref. 35004], Mendonça & Netto-Ferreira 2015:192 [ref. 33967], DoNascimiento et al. 2017:35 [ref. 35633], Urbano-Bonilla et al. 2018:85 [ref. 35773] as cf. steindachneri, Flausino Junior et al. 2020:357 [ref. 37666], Meza-Vargas et al. 2021:20 [ref. 39298], Buckup 2024:303 [ref. 40817]). Current status: Valid as Characidium steindachneri Cope 1878. Crenuchidae: Characidiinae. Distribution: South America: Amazon and Orinoco River basins (Brazil, Bolivia, Colombia, Ecuador, Guyana and Peru). Habitat: freshwater.