Is the white sturgeon a fish

Is the white sturgeon a fish, the white sturgeon for many people may be relatively unfamiliar, fish is more common in our lives is that we often eat several types, but in fact, there are many types of fish, the following to understand the white sturgeon is a fish.

Is the white sturgeon fish 1

1, the white sturgeon is a semi-anadromous migratory fish, mainly distributed in our country in the upper and lower reaches of the Yangtze River main stream IDE, but also in the estuary of the brackish waters to become alive. With people overfishing year after year, this fish resources are declining, and is now facing the endangered animals.

2, this fish in the body to look very long pike, long sword-like kiss, in the front end of the narrow and flat, the base is relatively fat, the back of the light purple color, the abdomen and fins for the white powder color. The eyes are small, the upper and lower jaws have small, sharp teeth, and the entire surface of the head is densely covered with many prune-spotted sensory nerve cell tissue.

3, the white sturgeon individual is relatively large, the meat flavor is very delicious, rich in a high degree of fat and high protein, muscle protein content of 17.18%, 5.64% fat, liver protein content of 8.71%, 8.20% fat; ovaries protein content of 13.47%, 15.42% fat.

4, the white sturgeon is a large ferocious fish, in the habits of life is mainly to fish for food, but also eat a small amount of shrimp and crab and other animals. The world's largest white sturgeon was captured in the Columbia River in the United States in the 19th century, weighing 1800 pounds. After measuring it, locals released its rare fish back into the water.

Is the white sturgeon a fish2

What kind of fish is the white sturgeon?

The white sturgeon has great academic research value, known as the "living fossil in the Yangtze River", is the attention of Chinese and foreign "rare treasure". It is a hundred and fifty million years ago, the Mesozoic Cretaceous remains one of the very few ancient fish.

"A thousand pounds of wax, ten thousand pounds of elephant." "Elephant" refers to the Yangtze River white sturgeon, which is said to grow to tens of thousands of pounds. The white sturgeon is a large, adult fish that can grow up to seven or eight meters, swims quickly, and lives in the Mississippi River spoon-nose sturgeon belongs to the same spoon-nose sturgeon family of species. The Chinese swordfish, also known as the Chinese swordfish, is the largest freshwater fish in China. It is known as the "tiger in the water" and the "king of Chinese freshwater fish", and it is also one of the ten largest freshwater fish in the world.

How do you pronounce Beluga?

The pinyin for white sturgeon is [bái xún]

Why did the white sturgeon go extinct?

In the List of National Key Protected Wildlife approved by the State Council in 1988, there are nine species of fish involved in the Yangtze River Basin, which are the white sturgeon, Chinese sturgeon, and Yangtze sturgeon, all of which are first-class protected animals. In addition to the extinction of the Yangtze River white sturgeon, China's endemic Chinese sturgeon and Yangtze River sturgeon are still assessed by the World Conservation Union (IUCN) as "critically endangered" level (status).

As the old saying goes: several birds do not enter the stagnant water, fish and turtles can not be eaten, but because of overfishing, the Yangtze River has been trapped in the "no fish" situation. Of course, the reasons for the extinction of the white sturgeon are manifold. As the flagship species at the top of the Yangtze River food chain, its number was not much, more susceptible to the impact of human activities, such as sand mining ships, docks, etc. to accelerate their demise time. But the main reason for the extinction of the white sturgeon is to cut off the channel between the fattening and spawning grounds.

The white sturgeon is a carnivorous fish, to other fish subsistence, if the upper reaches of the Yangtze River is not enough bait, can migrate to the lower reaches of the foraging. But now the environment has changed, especially after the completion of some dams on the Yangtze River, the downstream road cut off, food reduction, resulting in the extinction of the white sturgeon.

Is the white sturgeon a fish3

White Sturgeon

White Sturgeon (scientific name: Psephurus gladius): the body length of 2-3 meters, weighing 200-300 kilograms, the largest body length up to 7.5 meters. Also known as the Chinese spoon-nosed sturgeon, and live in the Mississippi River spoon-nosed sturgeon belongs to the spoon-nosed sturgeon species. Also known as the Chinese swordfish, it is the largest freshwater fish in China. It is also commonly known as the Elephant Fish because of its long, elephant trunk-like kiss.

China's ancient white sturgeon was called tuna. Spring anadromous spawning. Mainly produced in China's Yangtze River from Yibin to the mouth of the Yangtze River in the dry tributaries, the Qiantang River and the Yellow River also found in the lower reaches. It is a rare and valuable animal specialty of our country, belonging to the national level of wildlife maintenance animals, known as the "water giant panda".

As the saying goes, "a thousand pounds of wax, ten thousand pounds of elephant." "Lazi" refers to the Chinese sturgeon, "elephant" refers to 'is the Yangtze River white sturgeon.

White sturgeon is large, adult fish can be up to seven or eight meters long, swim fast, known as the "water monarch". White sturgeon and the Yangtze River sturgeon, the same, is a hundred and fifty million years ago, the Mesozoic Cretaceous remains one of the very few ancient fish.

In 2003, the Yangtze River white sturgeon was last seen in people's vision, when scientists from the Yangtze River Fisheries Research Institute had rescued a Yangtze River white sturgeon and released, and after that there was no sign of the white sturgeon. For more than a decade, it has not been in the fishermen and scientists in the painstaking search to appear.

The picture shows experts rescuing the Yangtze River white sturgeon in 2003.

In the experts' rescue, the white sturgeon's injury recovery is outstanding, such as recovery to have the conditions of release, "King of Fish" white sturgeon was released to the Yangtze River. But the experts did not finish their work, they began to pursue the sonar signal of the white sturgeon, 24 hours without continuity.

January 30, 2003 more than 5:00 in the morning, the pursuit of the ship followed the white sturgeon's "footprints", tracing the Yibin, Sichuan Nanxi and Jiang'an County, near the junction of the "Jinjiwei" section of the river, because the Yangtze River fog, the pursuit of the ship! Unfortunately, the ship touched the reef, the propeller is damaged, can not continue to fly, delayed for six or seven hours. Unfortunately, to track the boat correction, and then did not find the white sturgeon sonar signal.

The last rescue of the Yangtze River white sturgeon, this disappeared in the vast Yangtze River ......

The disappearance of the "Yangtze River final white sturgeon" is no more than three kinds of "destiny "

One is dead, extinct;

The second is hiding, human more than ten years of pursuit did not find the sonar signal;

The third is the sonar dropped, the white sturgeon out of human monitoring.

"I expect the latter two outcomes." The Yangtze River white sturgeon and the albino dolphin have been designated as "critically endangered" species, and the Yangtze River white sturgeon was declared extinct one step earlier than the albino dolphin.

We have never met, heard that it is forever

For human beings, the extinction of the Yangtze River white sturgeon is a serious alarm. Because the Yangtze River white sturgeon is located in the Yangtze River aquatic organisms at the top of the food chain, its extinction of the Yangtze River aquatic ecological impact is extremely serious, as if a natural area lack of monarchs and lions, downstream hyena will be flooded, not only damage to the biological chain, will also form a hostage to the human being.

Human activity is an important cause of degradation of environmental factors, including species habitat reduction, hunting or wildlife trade, global warming, pollution, and invasion of exotic species.

It can be said that there is a great possibility that over-capture, river pollution, and shipping about the Yangtze River are important reasons for the extinction of the Yangtze River white sturgeon. Even if people do not capture the Yangtze River white sturgeon, but also because of excessive capture of other fish and lead to the Yangtze River white sturgeon's food cuts, making them difficult to make a living, difficult to reproduce, until gradually disappeared. So it's urgent to complete the 10-year ban on fishing and trapping on the Yangtze River. The only way to not let the Yangtze River white sturgeon disappear after the Chinese sturgeon and other important fish extinction, but also to prevent the "posterity and not learn from it, but also so that the posterity and the posterity of the posterity of grief also" consequences.

Fish should be released, people should reflect.

Fish to the utmost is no fish, respect the rules is no worry,

The rise and fall of fish, the essence of the natural light for the development of the indicator.

Give the Yangtze River a ten-year break, and the Yangtze River can return to the international scene.