ulreyi, Tetragonopterus Boulenger [G. A.] 1895:529 [Proceedings of the Zoological Society of London 1895 (pt 3); ref. 14576] Descalvados, Mato Grosso, Brazil. Syntypes: BMNH 1895.5.17.194-199 (6). •Valid as Hemigrammus ulreyi (Boulenger 1895) -- (Britski et al. 1999:39 [ref. 24147], López et al. 2003:26 [ref. 27366], Lima & Oyakawa in Reis et al. 2003:133 [ref. 27061], Casciotta et al. 2003:99 [ref. 28130], Menni 2004:77 [ref. 28131], Carvalho et al. 2010:253 [ref. 30862], Mirande 2010:507 [ref. 31006], Ota et al. 2014:278 [ref. 33373], Sarmiento et al. 2014:184 [ref. 35004], Mirande & Koerber 2015:26 [ref. 35117], Koerber et al. 2017:40 [ref. 35267], Reia & Benine 2019:414 [ref. 36527], Ota et al. 2019:345 [ref. 36619]). Current status: Valid as Hemigrammus ulreyi (Boulenger 1895). Acestrorhamphidae: Pristellinae. Distribution: Paraguay River basin: Argentina, Bolivia, Paraguay and Brazil. Habitat: freshwater.