Fig. 1. a in Scientific Note Cytogenetic data on Astyanax jacuhiensis (Characidae) in the lago Guaíba and tributaries, Brazil

Fig. 1. a) Giemsa-stained karyotype of Astyanax jacuhiensis; b) Chromosomes with positive sites after silver staining; c) Metaphase plate with fluorescence in situ hybridization (FISH) showing the 18S rDNA sites (arrows); d) Metaphase plate showing CMA positive sites (arrows).