hasemani, Characidium Steindachner [F.] 1915:201 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 52 (no. 17); ref. 15071] Rio Surumi at Serra do Melho and Rio Rupununi, Brazil. Syntypes: (several) NMW 69253-54 (3, 2). Species listed in above abstract only and not in subsequent works (Steindachner 1915 [ref. 4244], 1917 [ref. 15259]). •Valid as Characidium hasemani Steindachner 1915 -- (Buckup 1993:101 [ref. 20831], Buckup in Reis et al. 2003:89 [ref. 27061], Peixoto & Wosiacki 2013:56 [ref. 32558], Zanata & Camelier 2014:340 [ref. 33380], Melo & Oyakawa 2015:287 [ref. 33788], Mendonça & Netto-Ferreira 2015:192 [ref. 33967], Zanata & Ohara 2015:375 [ref. 33970], Zanata & Camelier 2015:497 [ref. 33983], Zanata et al. 2015:381 [ref. 34023], Zanata et al. 2018:84 [ref. 36279], Malanski et al. 2019:8 [ref. 36865], Flausino Junior et al. 2020:357 [ref. 37666], Taphorn et al. 2022:20 [ref. 41297], Buckup 2024:298 [ref. 40817], Zanata et al. 2024:8 [ref. 41604]). Current status: Valid as Characidium hasemani Steindachner 1915. Crenuchidae: Characidiinae. Distribution: South America: Rupununi and Amazon River basins (Guyana and Brazil). Habitat: freshwater.