Abstract:The genera Cichlasoma and Gymnogeophagus belong to the subfamily Cichlinae, the only one in Neotropical cichlids. Cichlasoma dimerus, C. paranaense, C. portalegrense, Gymnogeophagus rhabdotus, and G. lacustris were collected at different points in the Paranapanema and Paraguay basins and the Lagoon of Patos hydrographic system. In addition to conventional analysis, CMA 3 fluorochrome staining, and FISH with 18S rDNA probe were performed. All species had a diploid number equal to 48, with inter-and intraspecifi… Show more
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