simus, Tetragonopterus Boulenger [G. A.] 1898:2 [Bollettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino v. 13 (no. 329); ref. 14677] Valley of Chota, Pacific slope of northern Ecuador. Syntypes: BMNH 1898.11.4.71-73 (3), MSNG 35974 (3), MZUT 1527 (many). Type catalog: Tortonese 1940:138 [ref. 21559], Tortonese 1961:183 [ref. 10343]. •Valid as Bryconamericus simus (Boulenger 1898) -- (Ovchynnyk 1967:28 [ref. 37559], Ortega & Vari 1986:7 [ref. 9708], Román-Valencia 2000:453 [ref. 25256], Silva in Reis et al. 2003:118 [ref. 27061], Román-Valencia et al. 2013:127 [ref. 32807], Barriga Salazar 2014:106 [ref. 35745], Jiménez-Prado et al. 2015:135 [ref. 34894], Román-Valencia et al. 2015:244 [ref. 34022]). •Valid as Eretmobrycon simus (Boulenger 1898) -- (Thomaz et al. 2015:Add. 5 [ref. 33893], Malabarba 2024:156 [ref. 40817]). Current status: Valid as Eretmobrycon simus (Boulenger 1898). Characidae: Stevardiinae. Distribution: South America: Pacific slope drainages, Ecuador and Peru. Habitat: freshwater.