Figure 1

Amazon representatives of the Symphysodon species, geographical distribution of Symphysodon species (after Bleher (2006), modified) in the Amazon basin and the Purus and Caravari paleoarches. (a) Symphysodon aequifasciatus. (b) S. discus. (c) S. haraldi. (d) Geographical map showing the location of Discus sampling sites in Amazonas state, Brazil: a, Tefé; b, Novo Airão; c, Manacapuru.