Pirarucu: Amazon's giant air-breathing fish in poachers' sights
A fish larger than a man, tasty as well as beautiful, the freshwater pirarucu is a favorite with poachers in a lawless part of the Amazon jungle where Brazil, Peru and Colombia meet.. - 'Cow of the Amazon' - For the Kanamari, the story of the pirarucu is that of "a tree leaf that fell into the water and became a giant fish," tribal chief Mauro da Silva Kanamari told AFP. "Arapaima gigas" by its scientific name, the pirarucu is one of the largest freshwater fish on the planet.