lateralis, Nanostomus Boulenger [G. A.] 1895:2 [Bollettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino v. 10 (no. 196); ref. 536] Colonia Risso, Paraguay. Syntypes: BMNH 1895.1.30.16-19 (4); MSNG 35133 (1); MZUT 1349 (2), 1044 (many), 1400 (1), 2565 (?). Type catalog: Tortonese 1940:139 [ref. 21559], Tortonese 1961:183 [ref. 10343]. Original genus is correctly Nannostomus. •Valid as Characidium lateralis (Boulenger 1895) -- (Britski et al. 1999:69 [ref. 24147]). •Valid as Characidium laterale (Boulenger 1895) -- (Buckup 1993:101 [ref. 20831], Buckup in Reis et al. 2003:90 [ref. 27061], da Graça & Pavanelli 2008:55 [ref. 29583], da Graça et al. 2008:329 [ref. 29629], Netto-Ferreira et al. 2013:366 [ref. 32717], Leitão & Buckup 2014:15 [ref. 33323], Zanata & Camelier 2014:340 [ref. 33380], Sarmiento et al. 2014:185 [ref. 35004], 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], Melo & Espíndola 2016:566 [ref. 34928], Koerber et al. 2017:43 [ref. 35267], Zanata et al. 2018:84 [ref. 36279], da Graça et al. 2019:5 [ref. 37061]). Current status: Valid as Characidium laterale (Boulenger 1895). Crenuchidae: Characidiinae. Distribution: Paraná River basin, Paraguay, Bolivia and Brazil. Habitat: freshwater.