The Tambaqui (Colossoma macropomum) is the largest characin of South America. It may reach more than 1 meter and 30 kilograms in total weight. The Tambaqui is found in the Amazon and Orinoco river basins in its wild form. It is similar in shape to the Piranha and is sometimes confused with the carnivorous fish. Body colour is basic black to gray with spots and blemishes in its mid body. All the fins are black and the pectoral fins are small. This species is usually solitary. Adults stay in flooded forests during the first 5 months of flooding and consume fruits and grains. Young and juveniles live in black waters of flood plains until sexual maturity. The Tambaqui feeds on zooplankton, insects, snails, and decaying plants.