Species that contain: Apareiodon and affinis [ 2 ] records

affinis, Parodon Steindachner [F.] 1879:32 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 16 (no. 4); ref. 20480] La Plata, Province of Buenos Aires, Argentina. Syntypes: (several) whereabouts unknown. Species later illustrated and described in more detail in Steindachner 1879:20, Pl. 3 (fig. 3) [ref. 4228]. •Valid as Apareiodon affinis (Steindachner 1879) -- (Garavello 1977:452 [ref. 7250], Starnes & Schindler 1993:755 [ref. 21014], Gómez & Chebez 1996:54 [ref. 23791], Sverlij et al. 1998:31 [ref. 27632], Britski et al. 1999:70 [ref. 24147], Bonilla et al. 1999:1 [ref. 25109], Pavanelli in Reis et al. 2003:46 [ref. 27061] with a holotype, López et al. 2003:10 [ref. 27366], Menni 2004:72 [ref. 28131], Pavanelli 2006:89 [ref. 28544], Litz & Koerber 2014:7 [ref. 33622], Sarmiento et al. 2014:186 [ref. 35004], Mirande & Koerber 2015:11 [ref. 35117], Bertaco et al. 2016:415 [ref. 34561], Nión et al. 2016:27 [ref. 35565], Koerber et al. 2017:12 [ref. 35267], Azevedo-Santos et al. 2020:5 [ref. 39606], Reis et al. 2020:462 [ref. 38364], Brandão et al. 2023:131 [ref. 40464], Loureiro et al. 2023:40 [ref. 40506]). Current status: Valid as Apareiodon affinis (Steindachner 1879). Parodontidae. Distribution: South America: La Plata River basin (Argentina, Brazil, Bolivia, Paraguay and Uruguay). Habitat: freshwater.

paraguayensis, Parodon Eigenmann [C. H.] in Eigenmann & Ogle 1907:6 [Proceedings of the United States National Museum v. 33 (no. 1556); ref. 1266] Asuncion, Rio Paraguay, eastern Brazil. Holotype: CAS 6765 [ex IU 9953]. Paratypes and additional material: CAS 6759 [IU 9953a] (14), 6769 [IU 9952] (7), 6770 [IU 9975] (3), 6785 [IU 10237] (14); MNRJ [ex USNM 1641] (1); USNM 1641 (orig. 2, now 0), 2108 (2), 120193 [ex IU 9952] (3); ZMB 16948 (3), 16952 (2). Type catalog: Vari & Howe 1991:33 [ref. 19022]. •Valid as Apareiodon paraguayensis (Eigenmann 1907) -- (Starnes & Schindler 1993:755 [ref. 21014], Bonilla et al. 1999:1 [ref. 25109]). •Synonym of Apareiodon affinis (Steindachner 1879) -- (Pavanelli in Reis et al. 2003:46 [ref. 27061], Litz & Koerber 2014:7 [ref. 33622], Mirande & Koerber 2015:11 [ref. 35117], Koerber et al. 2017:12 [ref. 35267]). Current status: Synonym of Apareiodon affinis (Steindachner 1879). Parodontidae. Habitat: freshwater.