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Tambaqui

Stocking Fish Tips: For new tanks, be sure the fish that you add to your tank are hardy. After the tank has aged for a few months, less hardy fish can be added. A tank needs to “mature” (complete the aquarium nitrogen cycle) before it can accomodate certain species of fish. Submitted by: Dahly
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The Tambaqui (Colossoma macropomum) is a freshwater fish of the subfamily Serrasalminae, family Characidae. It is also known by the names Pacu, Black pacu, Black-finned pacu, Giant pacu, Cachama and Gamitana. It is the only species of the genus Colossoma.

The tambaqui is the largest characin of South America. The tambaqui is found in the Amazon and Orinoco basins in its wild form. However, its pisciculture form largely distributed in South America.[2]

It may reach more than 1 metres in total length and 30 kilograms in total weight.[2]

It is similar in shape to the piranha and is sometimes confused with the carnivorous fish; the pacu is tall and laterally compressed with large eyes and a slightly arched back. Body color is basic black to gray with spots and blemishes in its mid body. All the fins are black and the pectoral fins are small. Around 10 percent of a tambaqui’s weight is fat. The record recognized world by IGFA belongs to the Brazilian Jorge Masullo de Aguiar with 32,4 Kg