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.
Black piranhas and red-bellied piranhas are considered the most dangerous and aggressive toward humans. Nonetheless, South American swimmers typically emerge from piranha-infested waters without loss of flesh.iranhas are known for their razor-sharp teeth and relentless bite. (The word piranha literally translates to â tooth fish â in the Brazilian language Tupi.) TupÃ­ adults have a single row of interlocking teeth lining the. jaw