A Molecular Perspective on Systematics, Taxonomy and Classification Amazonian Discus Fishes of the Genus Symphysodon – Amado et al 2011
Tropical regions contain many more species than do temperate and polar regions; however, explanations as to why remain unclear; for example, see [1, 2]. The Amazon Basin is particularly species rich and harbors arguably the world’s greatest terrestrial [3, 4] and freshwater [5] biodiversity. Numerous potential processes generating this diversity