affinis, Moenkhausia Steindachner [F.] 1915:348 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Klasse v. 52 (no. 27); ref. 20500] Mouth of Rio Negro, Brazil. Syntypes: (3) NMW. Species described in more detail in Steindachner 1915:584 [ref. 15070]. •Valid as Moenkhausia affinis Steindachner 1915 -- (Benine in Reis et al. 2003:145 [ref. 27061], Géry & Zarske 2004:42 [ref. 28287], Carvalho et al. 2014:378 [ref. 33383]). Current status: Valid as Moenkhausia affinis Steindachner 1915. Acestrorhamphidae: Stichonodontinae. Distribution: Lower Negro River basin, Brazil. Habitat: freshwater.