8. Piranhas
Of all the fish, Piranha may be the most notorious. Looking at the sharp teeth and strong jaws is enough to cause chills. Piranha is well known as a fierce predator, living throughout the freshwater waters of South America. They feed in the early morning or dusk, hiding underwater and waiting for small prey to pass by. Then, without warning, they attack and devour their prey with a ferocity unparalleled in freshwater communities. In some cases, they will hunt in groups to take on larger prey, including horses, rodents and even humans.
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