Piranhas are South American freshwater fish.
They are well-known for their razor-sharp teeth, which they utilise to eat other fish, insects, and even small animals.
They attacks on humans are uncommon, but when they do occur, they can be deadly.
Piranhas' teeth can be replaced. They shed all of their teeth on one side of their heads at once, then grow a fresh set of teeth in their jaws.
The majority of piranha species are omnivores, eating a wide variety of foods such as fish, plants, and insects.
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