Piranha

 

  

Animal State | Piranha | Piranhas are found in the Amazon basin, the Orinoco, in rivers of Guyana, Paraguay-Paraná and São Francisco River Systems. Piranhas were also found in the lake in southern Bangladesh Kaptai. Serrasalmus, Pristobrycon and Pygopristis Pygocentrus are the most easily recognized by their individual teeth. All piranhas have a single row of sharp teeth in the two jaws, the teeth are tight and locking (by means of small cusps) and are used for the rapid punching and shearing. Individual teeth are typically broadly triangular, sharp, blade-like (flat profile). There are minor variations in the number of cusps, in most species, the teeth are tricuspid with a longer median cusp which individual teeth appear substantially triangular. 

Piranhas are important ecological components of its natural environment. Although confined to the lower river, these fish are widespread and inhabit diverse lotic and lentic habitats. Some piranha species are abundant locally and multiple species often occur together. As both predators and scavengers, piranhas influence the local distribution and composition of fish assemblages. Some piranha species consume large quantities of seeds, but unlike the related Colossoma and Piaractus, herbivorous piranhas chew well and eat all the seeds completely consumed and therefore do not function as dispersers. Piranha has a reputation as fierce predators that hunt their prey in schools. Piranhas are "essentially as regular fish with big teeth." Research on the species Serrasalmus aff. 

Piranha teeth are often used to make tools and weapons by the indigenous population. Piranhas are also popular as food, but if an individual is bitch caught on a hook or line, can be attacked by another (free) piranhas Piranha are commonly consumed by subsistence fishermen and often sold for food in local markets in recent decades, the dried samples were marketed as tourist souvenirs. Piranhas occasionally bite and sometimes injure bathers and swimmers. A piranha bite is considered more an act of negligence of misfortune, but piranhas are a considerable nuisance to commercial and recreational fishers because they steal bait, mutilate catch, damage nets and other gear, and can bite when handled. Several piranha species appear in the aquarium trade. Piranhas can be bought as pets in some areas, but are illegal in many parts of the United States

The piranha aquarium is more common Pygocentrus nattereri, red-bellied piranhas. Piranhas can be bought at maturity or as babies, often no bigger than a thumbnail. Piranhas are likely to become cannibalistic on others in your group, if malnourished There are many myths about how they can piranhas dilacerate a human or bovine seconds. These myths refer specifically to Pygocentrus nattereri, red-bellied piranhas. Attacks on humans are usually reported around the docks where the fish are often torn and the viscera are usually thrown into the water. Piranha (1978) and Piranha II: The Spawning (1981) perpetuates the grim picture of piranha piranhas showing deadly bite and eat humans.