The Piranha bites are however limited to bites on the toes and the hands which do not cause adverse injuries on an individual. During times when there is food scarcity, the fish will show signs of cannibalism as they struggle for survival in their natural environment. They could bite you as they might mistake you for food, although this is unlikely.The Piranha’s lateral line is highly sensitive to hydro-logical changes in the water and this includes temperatures changes within tides and waves. During such times there is scarcity of food, within their natural environment they will bite you as they are prone to biting as they are looking for food. If you make noises and splash water the fish might confuse the sound of noise for falling fruits and the splashing of water for injured fish and could target and bite you as they are searching for food. Some Piranhas are exclusively herbivores while most of them are omnivorous in nature. During frenzies, the fish bite the animal in a large group and the water might turn red as the flesh of the animal is stripped. In Suriname there was an incident of a girl who had been bitten by Piranha fish, Jan disputed that the fish had killed the girl as he said that the media had exaggerated the news.So mostly Piranha are wary of humans in the water, as a precaution against real predators, but hypothetically several conditions would have to be metThe Piranha would have to be very hungry to risk itYou would have to be threatening the Piranha for it to see a bite as self defenceFor an attack to happen you would have to be incapacitated or unconsciousPiranha attacks happen when the prey is easily attacked or vulnerable. Over the last 10 years, most attacks in the Amazon region have been reported to be minor bites. The jaw for instance is very powerful with teeth which are chisel shaped arranged in a single row within the jaw. Attacks on a mammal and the stripping of flesh to the bone might not possibly occur as most carcasses of animals washed ashore indicate they still have muscle mass on them.Essentially they still contain flesh, even when they have been bitten by Piranha fish. Ironically the Piranha is more scared of you in the water than the other way around. If you have a wound the fish might attack you as they could think that you are dead or weak, and would think that you are potential prey. More of a warning bite. The Piranha fish is omnivorous, and apart from eating plants they will feed on weak and dead animals. This is when they become more aggressive. The sense of noise according to fish experts, helps the Piranha fish that there could be potential fruits or seeds that are falling into the water en masse. Scientists also research growth and reproductive behavior in a newly established population of northern snakehead.Snakehead fish are originally from China and Korea, but recently they've been found in Maryland, Virginia, Arkansas, California, and Florida.Snakehead fish are originally from China and Korea, but recently they've been found in Maryland, Virginia, Arkansas, California, and Florida.Snakehead fish are originally from China and Korea, but recently they've been found in Maryland, Virginia, Arkansas, California, and Florida.Two agencies within the Department of the Interior (DOI) are responsible for researching and regulating snakeheads: the U.S. Geological Survey (USGS) and the U.S. After a fishing trip in Texas, the author came home with some myth-busting facts on these toothy bottom dwellers—and great tips on how to catch them. They have razor sharp teeth, and they are so aggressive. One species, the giant snakehead (Channa micropeltes) native to southeastern Asia, has been reported to be aggressive toward humans who got too close to their nest.