dissimilis, Astyanax Garavello [J. C.] & Sampaio [F. A. A.] 2010:859, Fig. 8 [Brazilian Journal of Biology v. 70 (no. 3); ref. 31053] Rio Canoinhas, tributary to Rio Iguaçu near the bridge on highway BR 280 from Mafra to Itaiópolis, Canoinhas, Santa Catarina, Brazil. Holotype: MZUSP 105969. Paratypes: many at LISDEBE, MHNCI, MZUSP; NUP 10151 (5). Type catalog: Oliveira et al. 2022:6 [ref. 39255]. •Valid as 'Astyanax' dissimilis Garavello & Sampaio 2010 -- (Reis et al. 2020:458 [ref. 38364]). •Valid as Astyanax dissimilis Garavello & Sampaio 2010 -- (Koerber et al. 2017:4 [ref. 35083], da Graça et al. 2017:12 [ref. 35556], Koerber et al. 2017:4 [ref. 35632], Koerber et al. 2019:4 [ref. 36736], Mirande & Koerber 2020:2 [ref. 37594]). Current status: Valid as Astyanax dissimilis Garavello & Sampaio 2010. Characidae: Stethaprioninae. Distribution: South America: Rio Iguaçu basin (Brazil and Argentina). Habitat: freshwater.