In the biosphere where nature and humans coexist, there is this notorious piranha, and with humans day and night, do piranhas really eat people?
Piranhas
If you think that piranhas are just vain, then you are very wrong, most experts think that the victims have drowned before they are swallowed by piranhas, and catfish just eat human corpses, although we have seen the movie is very scary, but we did not expect that there are piranhas in life.
Carnivorous fish
Piranhas are a term for carnivorous fish, not a particular species of fish, but a taxon.
Including nearly 50 species, these piranhas are mainly distributed in the rivers from the Eastern Andean Mountains to the Brazilian Plain, in addition to the Amazon River, the Cuiaba River and the Orinoco River are also its main production areas; The Amazon basin of South America, Argentina and Brazil, are all distributions of piranhas.
Six-whiskered catfish
There are reports; Fishermen in the United States caught a giant piranha, its body is 2.7 meters long, weighs 293 kg, its teeth are sharp, and after opening its abdomen, it actually finds a human head in the belly of the fish, which indicates that this horrible "six-whiskered catfish" has eaten people;
This giant piranha, found in the waters of the Sidah River in Illinois, is likely to have been abandoned there by some collectors, and the "six-whiskered catfish" is a famous European man-eating monster with huge body, sharp teeth, and a huge wide mouth that can create whirlpools underwater.
If you are unfortunate enough to be bitten and try to fight with these fish, it is in vain, and once you are dragged into the water, this big fish only needs a dozen kilograms of strength, and it can fall so that you can't get out of the water, and at that time, it can really only become a piranha's plate.
This strange fish belongs to the same kind as the South American water margin fish, which is famous for mistaking male genitals as nuts on trees as a staple food, and in 2011, two people in Papua New Guinea died of excessive blood loss from the genitals eaten by this fish.
Six-whiskered catfish are seasoned hunters, usually living underwater, quickly floating up and hunting when there is a noise on the surface of the water, generally hunting near the riverbank, the European giant catfish first slide when hunting, creating a whirlpool, so that the prey loses its direction, and then opens the huge wide mouth, like a vacuum cleaner, sucks the prey into the mouth and swallows it indiscriminately.
The six-whiskered catfish is long and scaleless, with a broad and flattened head. The mouth is wide and long, full of rows of sandpaper-like teeth, up to hundreds of them, and a set of tentacles on the upper and lower jaws, like gills, which help them catch prey in the chaotic waters.
Thus the great lakes that spread throughout Europe, as well as the rivers where the water flow is not urgent, in reality, the six-whiskered catfish can grow four kilograms a year when the water temperature is suitable.
Mutation in the survival of the six-whiskered catfish
Six-whiskered catfish can live for up to eighty years, like to nest among aquatic plants, during the mating season, lay eggs in nests, and protect 300,000 yellow fish eggs until they hatch, during the hatching period, any offender, six-whisker catfish will attack, because freshwater shrimp or other creatures will eat unsuspecting eggs.
Six-whiskered catfish have the habit of protecting the nest, for six-whisker catfish, the swimmer is the aggressor, so it will bite the swimmer, which is one of the reasons why the six-whiskered catfish eat people.
The previous legend is not empty, the six-whiskered catfish also has a lateral line on the body, which is used to observe any signals in the water, including water flow, aquatic plants, aquatic animals, etc. The six whiskers of the head of the six-whiskered catfish, like radar, are able to detect any information in the water, the appearance of the giant man-eating catfish; It is also possible that it is the result of a genetic mutation .
We all know that genetic mutations are the key to evolution, and this mutation is completely irregular, only the mutants who are most suitable for the natural environment are the easiest to survive, and in order to survive, they may mutate a variety of survival skills.
A seven conclusions
In nature, all species are trying to adapt to the changing environment, and only species that have adapted to the environment can survive.
In order to survive, many species evolve incredible survival weapons in order to protect their populations, and the same is true for piranhas.
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