What fish is large that have multiple rows of teeth?

The piranha is a large fish that has multiple rows of teeth. Piranhas are native to the rivers and streams of South America, and they are known for their voracious appetites and sharp teeth. Piranhas have a distinctive lower jaw that is longer than the upper jaw, and they have multiple rows of sharp, pointed teeth that are designed to tear through flesh and bone. Piranhas are social fish, and they often hunt in groups, and they can be dangerous to humans if they are provoked.