Pacu fish (Portuguese pronunciation) is a common name used to refer to several species of freshwaterfish related to the piranh that lives in the South America.
Full grown pacu fish is much larger than the piranha, reaching up to 1 m (3 feet) and 25 kg (55 pounds) in the wild. But they are not aggressive carnivores like the piranhas.
The piranha is a carnivorous species while the pacu is omnivorous with vegetative tendencies.Because they look like piranhas they have become a very popular aquarium pet around the world.
They grow really fast in captivity and require a fish tank of at least 500 gallons. Because of this, Pet owners have Illegally been releasing them into local water in America and Europe causing problems to the environment.
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