It is a constituent of sucrose, of raffinose, and of the polysaccharide inulin, from which it may be obtained by hydrolysis.
Habitat Preference. Piranhas are native to the central and southern river systems of South America, where they inhabit tropical rivers and streams and are often found in murky water. When collected in the United States they have been found in ponds, lakes, rivers, and borrow pits.iranhas are aggressive predators that lurk in vegetation and ambush and chase prey. Their diet consists mostly of insects, mollusks, crustaceans, worms, small fish, and some plant matter, but they often feed in large groups to kill larger prey like capybaras. Piranhas have few predators in the wild except man.
Piranha teeth are often used to make tools and weapons by the indigenous population. Piranhas are also popular as food, although if an individual piranha is caught on a hook and line, it may be attacked by others.Piranhas can be bought as pets in some areas, but they are illegal in many parts of the United States.It is illegal to import piranhas into the Philippines and violators could face six months to four years in jail.iranhas belong to the subfamily Serrasalminae, which includes closely related omnivorous fish such as pacus. Traditionally, only the four genera Pristobrycon, Pygocentrus, Pygopristis, and Serrasalmus are considered to be true piranhas, due to their specialized teeth.