The group of piranhas and alfonsinos represent a good number of species closely resembling one another, they share a life as a group and a high aggressiveness. We describe here this piranha because you are more frequent in La Plata Basin, but is also in the Amazon.
These fish have the body but less oval shape, very laterally compressed, a head and mouth with powerful maníbula equipped with some very sharp teeth which together give it a look fierce. Teeth are replaced continuously in both jaws facilitating their ability to feed.
They feed on prey alive and in many cases determine the presence or influence the distribution of food and other fish. It was to inflame wounds of animals and elderly together can reduce a body to only their bones in a very short time. Their size ranges between 15 and 25 cm, although they tend to draw older copies.
The fishermen of other species and fishing with bait, often see their fishing frustrated as the piranhas eat the bait. Take any artificial light and teams make a very fun fishing.