Fig. 3From: Karyotype differentiation in 19 species of river loach fishes (Nemacheilidae, Teleostei): extensive variability associated with rDNA and heterochromatin distribution and its phylogenetic and ecological interpretationKaryotypes of selected nemacheilid species after Giemsa staining and dual-colour (5S/45S) rDNA FISH. Giemsa-stained karyotypes (left column) and dual-colour FISH (right column) with 45S rDNA (red, arrows) and 5S rDNA (green, arrowheads) probes on (a, b) B. barbatula, (c, d) P. sp. The FISH chromosomes were counterstained with DAPI and the images were converted to grayscale. Bar = 10 μmBack to article page