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Research on red-bellied piranha breeding behavior in nature has revealed certain behavioral patterns around nesting sites. Adult piranhas will swim side-by-side in small circles, sometimes with two individuals swimming in opposite directions while keeping their ventral surfaces close to one another. Although this may appear to be a courtship ...
A few piranha species occasionally appear in the aquarium trade, and, in recent decades, dried specimens have been marketed as tourist souvenirs. [6] Piranhas occasionally bite and sometimes injure bathers and swimmers, but serious attacks are rare and the threat to humans has been exaggerated. [ 6 ]
This characteristic combined with its large size make it a danger to humans. Piranha's attacks on humans are anecdotal for the most part. The piranha mostly prefers to eat small fish and insects, along with seeds and aquatic plant material. The pygocentrus piraya plays a key role in their ecosystem by regulating the population of other fish [5]
Like most fish, when the wimple piranha feeds on small fish or scales floating in the water, it uses suction feeding. However, to feed on scales attached to fish, it uses ram feeding, where the predator will charge at the fish; the force of this collision actually knocks scales free. The teeth are used to scrape scales from the body.
Serrasalmus geryi, known as the violet line piranha or Gery's piranha, is a species of piranha of the family Serrasalmidae. It is found in the lower Tocantins and Araguaia Rivers of Brazil . [ 1 ] [ 2 ] The species is notable for being the one of only the members of the genus Serrasalmus that can coexist with others of the same species in ...
Serrasalmus elongatus is a slender and elongated shaped piranha from the S. humeralis group. [1] It is commonly known as elongated piranha or pike piranha in reference to its shape. In its native range it is one of the smaller piranha species locally termed caribe pinche ("mediocre piranha"), like the iridescent piranha ( S. irritans ).
The black piranha occurs in a wide variety of habitats but the adults have a preference for the larger, deeper river channels where they normally hunt for prey either in deep stretches or in the vicinity of rapids. The juveniles are most frequently recorded in stiller stretches where there is thick submerged or marginal vegetation.
Serrasalmus is a genus of piranhas.They are collectively known as pirambebas; the "typical" piranhas like the piraya piranha are nowadays placed in Pygocentrus.Like all piranhas, Serrasalmus are native to South America.