Piranha, as soon as you hear the name, you can guess that the water killer must be fierce. Cannibal fish has always been terrible, but is there any natural enemy for such a powerful aquatic creature? Let's go and uncover the mystery of piranha.
Piranha is ovoid fish, reproduction is not difficult, and can reproduce many times a year. There is no special requirement of water quality for piranha, and the weak acid water can be fed well. The female fish can produce 3000 to 5000 eggs during the spawning period. The fertilized eggs can hatch into larvae after 36 to 48 hours, and the larvae will feed on themselves after absorbing the yolk in 48 hours. (this article is edited by the four seas anecdotes https://love.4hw.com.cn/animal/33102.html , please indicate the source of reprint, more wonderful please Baidu four seas anecdotes, and add our official wechat Q group to participate in the discussion. )
Unveiling the mystery of piranha
Piranha, also known as pomfret, is native to the Amazon River and has more than 20 different species. Among them, the representative and popular species in domestic markets are called red bellied piranha (pomfret). They are small in size, generally about 25 cm in length. They have dark green back, light green body and fiery red abdomen. However, they are extremely cruel. Piranha has sharp teeth. Once the prey is bloody, it will be crazy. With its sharp teeth, it will bite and cut like a surgeon's scalpel until a pile of bones is left. (this article is edited by the four seas anecdotes https://love.4hw.com.cn/animal/33102.html , please indicate the source of reprint, more wonderful please Baidu four seas anecdotes, and add our official wechat Q group to participate in the discussion. )
Also known as man eating Pomfret
In Brazil's Amazon River Basin, piranha is listed as one of the four most dangerous aquatic species in the region. In Brazil, where piranha is the most active state, about 1200 cattle are eaten by pomfret in the river every year. Some children playing in the water and women washing clothes are also attacked by cannibal pomfret from time to time. Because of its ferocity, piranha is known as water wolf and water ghost.
Piranha ranks first among the four most dangerous aquatic species in the Amazon basin
In the Amazon River Basin, herdsmen graze cattle. When they encounter a river with piranha, they will drive a sick and weak cow into the river first. They will lure away the piranha in the river by luring the tiger away from the mountain, and then drive the cattle across the river quickly. As a victim of the old cattle, less than 10 minutes by the ferocious group of cannibal bite, leaving only a white bone remains. The local natives borrowed their ferocious characteristics and raised piranha in the moat to resist the invasion of beasts and offer them as gods. (this article is edited by the four seas anecdotes https://love.4hw.com.cn/animal/33102.html , please indicate the source of reprint, more wonderful please Baidu four seas anecdotes, and add our official wechat Q group to participate in the discussion. )
The neck of piranha is short. The skull, especially the palatine bone, is very hard. The bite force of the upper and lower palate is amazing. It can bite through the cowhide and even the hard wood, and break the steel fishing hook at one bite. The crocodile, which usually dominates the water, will shrink into a ball once it encounters a piranha. It will turn its body to the sky, turn its hard back down, and immediately float on the water surface, so that the piranha can not bite its abdomen and save its life.
Mature piranha is similar in appearance to male, with bright green back and bright red abdomen, with stripes on the body side. There is a highly developed sense of hearing. The two jaws are short and powerful, the mandible protrudes, and the teeth are triangular and sharp, arranged alternately from top to bottom. After biting the prey tightly, the meat can be torn down by twisting the body, and 16 cubic centimeters of meat can be bitten off with one bite. Rotation of teeth enables them to continue foraging, and strong dentition can cause severe bite.
During the breeding period, the eggs will be laid on the roots of trees in the water, and the eggs are adhesive. Thousands of eggs can be laid at a time. The parent fish will have the behavior of protecting the eggs, and the fertilized eggs hatch after 9-10 days. The inundation of river water will affect the success rate of reproduction. Piranhas often come and go in groups, each with a leader, and others follow the leader, even the target of the attack. During the dry season, the waters become smaller, allowing the piranhas to congregate in large groups, making animals or people passing through the waters vulnerable to attack.
The smell of blood has long been thought to be the main cause of attacks by large groups of piranhas, but it has also been thought that the noise and water spray caused by injured animals attracted their attention. It is not easy for piranhas to hunt other fish in the rivers of the Amazon River Basin, because the river water is so turbid that the visibility usually does not exceed 1 m, and the distance from the prey when the piranha attacks cannot be more than 25 cm.
Mature piranhas are similar in appearance
In addition, in order to deal with piranha, many fishes in the Amazon River Basin have developed their own 'sophisticated weapons' in the competition for survival for thousands of years. For example, a high-voltage electric current from an electric eel can send more than 30 piranhas to death on electric chairs, and then eat them slowly. Another species of fish, Silurus spinosa (also known as the heterotypic Pipa rat family), is good at using its sharp spines. If a piranha wants to bite it, it immediately opens its spines, making the piranha helpless.
Although piranhas are ferocious in nature, they are not invulnerable
Some people would say that the natural enemy of piranha is not the electric eel? But in the real natural environment, there are several piranhas that are eaten by electric eels, because in the menu of electric eels, piranhas are not their staple food. Their real natural enemies are the dry season of their origin, which lasts for 4-6 months without rain. Some of the water evaporated by the sun is only a little water, and groups of piranhas struggle in the pond. The images of several species of waterfowls and caimans competing for prey can be seen on National Geographic Channel or the discovery channel. The above-mentioned natural enemy is' electric eel ', which is groundless. (this article is edited by the four seas anecdotes https://love.4hw.com.cn/animal/33102.html , please indicate the source of reprint, more wonderful please Baidu four seas anecdotes, and add our official wechat Q group to participate in the discussion. )
As we learn more about piranha, we will find that any powerful creature has its weaknesses. Although piranhas are ferocious in nature, they are not invulnerable to all kinds of poisons. They still have something to fear. (this article is edited by the four seas anecdotes https://love.4hw.com.cn/animal/33102.html , please indicate the source of reprint, more wonderful please Baidu four seas anecdotes, and add our official wechat Q group to participate in the discussion. )