naponis, Moenkhausia Böhlke [J. E.] 1958:14, Pl. 2 (fig. 2); Figs. 1-2 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 110; ref. 12050] Headwaters of Río Arajuno, Ecuador, 1°24' to 1°26'S, 77°50' to 77°55'W, elevation 1000-1050 meters. Holotype: USNM 164067. Paratypes: ANSP 75900-01 (1, 3); USNM 164068 (2), 164071 (2), 175142 (2). Type catalog: Böhlke 1984:51 [ref. 13621], Vari & Howe 1991:30 [ref. 19022]. •Valid as Moenkhausia naponis Böhlke 1958 -- (Ovchynnyk 1967:29 [ref. 37559], Benine in Reis et al. 2003:149 [ref. 27061], Bertaco et al. 2011:60 [ref. 31234], Barriga Salazar 2014:108 [ref. 35745], Meza-Vargas et al. 2021:19 [ref. 39298], Marinho & Benine 2024:232 [ref. 40817]). Current status: Valid as Moenkhausia naponis Böhlke 1958. Characidae: Stethaprioninae. Distribution: South America: upper Amazon River basin (Ecuador and Peru). Habitat: freshwater.