borellii, Nanognathus Boulenger [G. A.] 1895:3 [Bollettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino v. 10 (no. 196); ref. 536] San Pablo, Tucuman Province, Argentina. Holotype (unique): MZUT P 2563 [ex MZUT 1045]. Type catalog: Tortonese 1940:139 [ref. 21559]. •Valid as Characidium borellii (Boulenger 1895) -- (Buckup 1993:101 [ref. 20831], Britski et al. 1999:69 [ref. 24147], Géry et al. 2001:27 [ref. 25155], Zarske & Géry 2001:243 [ref. 25972], Buckup in Reis et al. 2003:88 [ref. 27061], da Graça & Pavanelli 2008:55 [ref. 29583], Koerber 2011:1 [ref. 31122], Koerber 2014:5 [ref. 33621], Casciotta et al. 2015:1 [ref. 33697], Mirande & Koerber 2015:27 [ref. 35117]). Current status: Valid as Characidium borellii (Boulenger 1895). Crenuchidae: Characidiinae. Distribution: Andean tributaries of Paraná River basin, Argentina. Habitat: freshwater.