Colossoma macropomum

Colossoma macropomum, also known as Tambaqui or Black Pacu, is a large, robust fish. It is often confused with Piranhas due to its similar body shape, but unlike their carnivorous relatives, Tambaqui are primarily herbivores, preferring fruits, nuts, and seeds in the wild. In captivity, they require a spacious aquarium due to their potential size and swimming habits. They are often kept in public aquariums or large fish tanks.