Commonly known as scissors fish, piranha, piranha, also known as Caribbean fish or piranha.
Carnivorous fish with sharp teeth, distributed in rivers and lakes in South America, is famous for its ferocity. Distribution range from northern Argentina to Colombia. There are many kinds of piranhas in the Amazon river, and 20 species have been found so far. The most notorious is Serrasalmus nattereri, which has the strongest upper jaw and the sharpest teeth among all species of Serrasalmus. Especially in the dry season, this species hunts in groups, and the number of individuals in each group can reach more than 100. If large animals are attacked, several groups of red-bellied piranhas will gather together to feed crazily; But this situation is rare. Red-bellied piranhas like to attack prey of the same size or smaller than themselves. Under normal circumstances, a group of red-bellied piranhas are often scattered around looking for prey. When the fish in charge of reconnaissance finds its prey, it will attack it and send a signal to its companions. They may send out auditory signals, because the red-bellied piranha has extremely sensitive hearing. Every fish in a group of red-bellied piranhas rushed to their prey, took a bite, and swam away to make way for other companions. However, most piranhas never attack large animals, and piranhas rarely attack people. Although piranhas are attracted by the smell of blood, they eat more carrion than they kill prey.
About 12 species of piranha belonging to the genus Catoprion are called hooded piranhas. They can survive by biting a small bite from the fins or scales of other fish, but the bitten fish can recover completely after swimming.
This fish lives in the Amazon River and Orinoco River basins and is famous for its fierceness.
I usually live in eat small fish. When cattle, horses and other terrestrial animals are hungry, if they fall into the water, they will attack them and eat only bones for a few minutes.
Sharp teeth like the one on the right, and strong jaw muscles, tear the skin of prey and bite off meat.