The Amazon and Orinoco basins in northern South America are home
to the highest concentration of freshwater fish species on earth,
with more than 3,000 species allotted to 564 genera. Amazonian
fishes include piranhas, electric eels, freshwater stingrays, a
myriad of beautiful small-bodied tetras and catfishes, and the
largest scaled freshwater fish in the world, the pirarucu.
Field Guide to the Fishes of the Amazon, Orinoco, and... more...