The piranha is known for its keen sense of smell, which helps them to locate prey. Blood in the water will send piranhas into a frenzy. They are also able to sense any unusual vibrations in the water around them and any commotion in the water will attract a shoal of piranhas.
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Piranhas go in groups and attack prey underwater. They use their sharp teeth to rip apart the prey.
fish
It takes at least 50 piranhas to kill a female green anaconda. Ocelots do not prey on anacondas.
Piranhas normally live in large groups that swim and feed together. Piranhas prefer to feed on dead on injured prey as killing large prey requires a great deal of energy.
In small groups, they prey on fish, frogs, toads, turtles, and geese. In very large groups, they prey on anacondas.
Piranhas hunt in large shoals. By attacking together this way, they can quickly devour their prey.
By echolocation
There is no specific timeframe as it would depend on the number of piranhas and the size of the prey. In general, if a group of piranhas were attacking a person, it could happen relatively quickly due to their sharp teeth and aggressive feeding behavior.
Sharp teeth to rip through its food and prey. can survive on land and water.
Green anacondas prey on piranhas, catfish, apraima fish, and freshwater fish.
it is both :piranha can eat something as big as a human but a shark eats anything in in its path it is everything you could ever imagine