Tab. 1. Cytogenetic data for Corydoras species from southern Brazil. 2n= diploid number; PR = Paraná State; SC = Santa Catarina State; RS = Rio Grande do Sul State; M = metacentric; SM = submetacentric; ST = subtelocentric; A = acrocentric; 18S = number of 18S rDNA sites; 5S = number of 5S rDNA sites; NOR = number of 18S rDNA sites detected by Ag-NOR staining. * The river was not identified in the original paper.

Species	Locality	2n	Karyotypic Formula	Number of rDNA Sites	References
C. ehrhardti	Verde river, Tibagi basin, Upper Paraná	44	18m+26sm	18S/1 pair; 5S/1 pair	Current study
C. ehrhardti	Lagoa Dourada, Tibagi basin, Upper Paraná	44	18m+26sm	18S/1 pair; -	(Artoni et al., 2006)
C. ehrhardti	*Jaraguá do Sul, Brazil, Atlantic basin	44	18m+26sm	18S/2 pairs; -	(Oliveira et al., 1993)
C. paleatus	Iguaçu river, Iguaçu basin, Lower Paraná	44	18m+26sm	18S/1 pair; 5S/1 pair	Current study
C. paleatus	Areia stream, Ribeira basin, Atlantic basin	44	18m+26sm	18S/2 pairs; 5S/1 pair	Current study
C. paleatus	Lagoa Dourada, Tibagi basin, Upper Paraná	44	18m+26sm	18S/3 chromosomes; -	(Artoni et al., 2006)
C. paleatus	*Curitiba, PR, Brazil, Iguaçu basin	44	20m+24sm	NOR/3 pairs; -	(Oliveira et al., 1993)
C. paleatus	*São Leopoldo, RS Brazil, Atlantic basin	44	20m+24sm	NOR/2 pairs; -	(Oliveira et al., 1993)
C. paleatus	Rio Grande, RS, Brazil, Atlantic basin	44	22m+22sm	NOR/2 pairs; -	(Oliveira et al., 1993)
C. lacrimostigmata	Barra Grande river, Ivaí basin, Upper Paraná	58	22m+36sm	18S/2 pairs; 5S/1 pair	Current study
C. nattereri	*Morretes, PR, Brazil, Atlantic basin	44	18m+26m	NOR/1 pair; -	(Oliveira et al., 1993)
C. barbatus	*Morretes, PR, Brazil, Atlantic basin	66	38m+22sm+4st+2a	NOR/4 pairs; -	(Oliveira et al., 1993)
C. barbatus	*Jaraguá do Sul, SC, Brazil, Atlantic basin	66	38m+22sm+4st+2a	NOR/ 3 pairs; -	(Oliveira et al., 1993)
C. carlae	Capanema river, Iguaçu basin, Lower Paraná	46	22m+22sm+2st	18S/1 pair; 5S/1 pair	(Rocha et al., 2016)