20 131February 26th, Christmas, Rosario, Argentina, the temperature almost reached 38 degrees Celsius, and people who were extremely hot jumped into parana river to cool down. However, about 60 people were attacked by piranhas while swimming, including more than 20 children. Most people were bitten with deep wounds, and a 7-year-old girl's finger was even bitten off.

On March 2, 20 15, a boy 1 1 year old in Peru accidentally fell into a piranha pond, and was eaten up by piranhas in just a few minutes, leaving only bones after the boy was salvaged.

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Subspecies distribution

According to the statistics of biologists, there are more than 30 species of piranhas found, not only in the Amazon River basin, but also in some Latin American countries east of the Andes in South America, from the southern coast of the Caribbean to northern Argentina.

Among more than 60 species of piranha, they are divided into two genera: pointed and round, and only a few species are more aggressive. Such as red belly (also known as Kabala, sawfish carp), black spot red belly, yellow belly, rouge and so on. Among them, the rouge water tiger is the most fierce, and it has the reputation of the king of water tigers. Its body length can reach 60 cm, and few people in China can identify it clearly.

There are many kinds of piranha. Swarms of piranhas often eat only the bones of animals that have strayed into the water in a short time, and even eat people who have strayed into the water. The body length can reach 200 mm.

Saw fat carp Karnofsky and saw fat carp Nessler (red-bellied saw salmon) were found in China. The fish bodies of these two kinds of fish were oval with forked caudal fins. The adult fish were mostly about 25 cm long, with gray-green bodies, dark green backs and bright red bellies. The jaw is developed with thorns, and the teeth are sharp, triangular and jagged.

Reproductive status

During the breeding period, the parent fish will lay eggs on the roots in the water, about 1000. After hatching in 9 ~10 days, the parent fish will protect the eggs. The flooding of the river will affect the success rate of hatching.

It is very difficult for piranha to breed in aquariums, which is also the reason for its high price, which is not as low as that of red-fin pomfret. They 18 months sexual maturity, male fish will be more bright.

During the breeding period, eggs will be laid on the roots of water, and the eggs are adhesive. You can lay thousands of eggs at a time. Parent fish will have the behavior of protecting eggs, and fertilized eggs will hatch after 9 ~10 days. The flooding of the river will affect the success rate of its reproduction.

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