Why is the silly and unreturnable tilapia not extinct by now?

The silly fish living in the sea, even if the predator nibbles, there is no way to escape, so silly and no power to fight back fish, why is not extinct until now? This fish is called a tilapia, it is slowly moving forward in the water, a seal in its vicinity, slowly approaching the tilapia, after seeing the right moment, the tilapia is a bite, directly biting out a defect, the tilapia can only silently bear, the predator's attack, without the power to fight back, become a "walking buffet ".

The car fish is also called the car trigger, some countries people because of its body, attached to some will be luminous animals, in the dark as if the moon's reflection, and it is called the moon fish. But this moonfish is not a moonfish with red fins, the two are different species, the car fish is a large oceanic fish, swimming speed is only 0.4 meters to 0.7 meters per second, and the whole body is as if it was clamped flat.

It cannot close normally and can only keep its o-shaped mouth open. The head of the flip-flop takes up almost half of the body, and the tail is very short, so short as to be negligible. There is also a dorsal and anal fin, the maximum body length can reach 3 meters to 5.5 meters, weighing about 1400 to 3500 kg, is the world's heaviest scleractinian fish. Although the flip-flop fish is not a good swimmer, it still has two brushes of diving skills.

To find today's share of food, it can dive to the bottom of the sea about 800 meters. Most fish are cold-blooded animals, with the environment and change their temperature, but the carp is indeed a thermostat, but also as of 2015, the human discovery of the first thermostat fish, carp in the face of predators bite, neither the ability to escape nor the ability to resist. In theory, such a chicken fish should not survive for a long time, why the car fish can still survive until now?

Although the cartwheel fish is very vulnerable to predation, nay, it is born more. As the saying goes, quality is not enough to take the number to make up, generally at the bottom of the food chain will lay a lot of eggs, as a way to maintain the continuation of the species. Take krill, for example, as a fishery catch and an important bait for many fish, especially baleen whales, which can eat a lot in one bite. The amount of krill is very high, and the current annual production reaches more than 500,000 tons, which is known as the world's future food bank.

The same is true for the carp, which spawns more than 300 million eggs to keep itself from disappearing into the world, and the average fish only lays about 300,000 eggs, and animals like seals and sharks lay several pups, which can only be calculated in pieces, so the carp can lay more than 300 million eggs is very much and is the most spawned fish in the world.

The pups of the carp are only two millimeters in size when they are first born, and can be crushed to death with a gentle pinch, so the pups often encounter various dangers, but its growth rate is also very scary, from two millimeters to small pudding to three or four meters of the big guy, which who would have thought that the carp could survive until now, in addition to the extremely high reproductive capacity, but also because it is thick skin.

The epidermis of the car fish is very rough, the thickness can reach about seven centimeters, if not hungry predators, basically will not prey on the car fish to eat, the lack of predator attack, the car fish can naturally live a little longer. Turnover fish is not only disliked by predators, but also by humans, fishing at sea fishermen can usually catch turnover fish, but fishermen usually choose to release, one because the moral is not good, turnover fish the name is more or less unlucky, some fishermen also taboo these, will not eat much.

And the skin of the fish, there are forty to fifty kinds of parasites in the above, handling is also more trouble, it is better to eat other fish. Secondly, because the meat of the fish is not very good, we as a big food country, certainly will not let go of the good things, but the fish as marine predators are disgusted by the fish, eat like chewing wax, not at all popular, more often than not is made into a fish meal used in feed.

Although the carp in the ocean, like an evolutionary failure and the hands of the chicken, to avoid their extinction, in other areas or made efforts. The biggest threat to the fish is the pollution of the marine environment, which has led to the destruction of the habitat on which the fish depends, and has been listed by the IUCN as a vulnerable species.