Not to mention the Yangtze River, take my small dam in the back of the mountain, 5 years ago, a few foreign bosses to invest in fish farming, the project yellow after the dam was deserted for several years no one to take care of.
The summer before last, the village of two young people to do farm work, can not resist the heat of the weather to swim in the water, but not half an hour, one of them felt violently dragged, a sharp pain in the calf, yelling swim ashore, only to find that the calf flowed with blood.
A closer look, a shot of dense fish teeth bite marks on the calf, the two stunned to run home, they concluded that they were attacked by the big fish in the water.
Later, this matter spread, some villagers go to the dam to raise ducks, found that the adult ducks after a period of time less than several, looking around the neighborhood are not, as if "dead". Previously thought it was stolen by someone in the middle of the night, know that one day he witnessed a bloody mouth, an adult duck directly swallowed and dive into the water scene , as for the true nature of this fish is what? We'll find out at the end of this article.
"Diving out of the shrimp and crab, the deep sea hide dragon", this truth is not false at all.
There are huge fish that can swallow ducks and bite people, not to mention the Three Gorges Dam on the Yangtze River, which has been storing water for more than 20 years. So the theory that there are big fish in the Three Gorges dam for 20 years is related to three factors:
The Three Gorges hydroelectric power plant project was started in 1994, and was not completed until 2006, when the Yangtze River was blocked, and the Three Gorges hydroelectric power plant became the world's largest hydroelectric power project.
After the completion of the dam, a reservoir of 1084 square kilometers was naturally formed, the deepest place can reach 175 meters, with an inventory capacity of 39.3 billion cubic meters! Although this blocks many fish from migrating and reproducing, on the other hand they are able to grow unchecked in the reservoir.
The function of a dam is to store water, to prevent flooding, and on another level to intercept a large artificial reservoir for fish breeding without intervention. The Yangtze River itself is huge in volume, vast in area, and ranks among the world's top rivers in terms of length, and is already a fish paradise, plus the fish in the Yangtze River reservoirs under these more than 20 years of impoundment have the capital for even greater growth.
There are big fish in the Yangtze River there is also a very important point of booster is: from 2020 onwards, the Yangtze River began to implement a fishing ban, the next ten years shall not be productive fishing, illegal angling, or else they will all be illegal to criminalize.
These decades, the Yangtze River Basin fish accelerated the pace of extinction, people unlimited poisonous fish, electrofishing, fishing, bombing, water pollution under the destruction, many rare fish have become extinct, such as the Yangtze River white sturgeon, did not pass the 2020, declared extinct in our time.
It can be seen that the reason for the accelerated extinction of fish, from human activities and environmental pollution. So, with the implementation of the fishing ban, the fish in the Yangtze River will be well protected, and the water quality will improve, which will allow the fish in it to survive for ten years, so that without natural enemies and human intervention, the fish may grow very large.
Just as the Australian continent is isolated, with no natural predators, a favorable environment, and little human interference, so the animals there are huge, after more than a decade of fishing bans, the Yangtze River's big fish will be bigger than people can imagine.
According to incomplete statistics, there are 424 fish in the Yangtze River, endemic fish as high as 183, in addition to common mackerel, grass carp, crucian carp, etc., there are many Chinese sturgeon, porpoise, as well as the name of the freshwater fish.
Perhaps evolutionary and genetic reasons, different fish size is the existence of a tipping point, generally to reach the year after it is difficult to grow again. But even so, the Yangtze River is full of fish, and many of them are rare, large freshwater fish that can easily exceed 100 kilograms.
So, the question is, how big is the biggest fish in the Yangtze?
It is not difficult to answer this question, as long as you know the fish in the Yangtze River, the upper limit of the size of the approximate how much, and then combined with some of the people testing observation, fishing data, you can come up with a vague answer.
The Yangtze River has a large number of fish, but many of the upper limit of body size is placed there, grow to adulthood maximum several pounds of fish account for a lot. Currently shows that the largest fish in the Yangtze River for the "sturgeon" class. They are contemporaneous with the dinosaurs, "living fossils", the label of primitive organisms and they are the closest (as we all know, primitive organisms are very large).
Before, the Yangtze River's largest fish is the "Yangtze River White Sturgeon", the largest white sturgeon can grow up to 7 meters long, the heaviest weight of 907 kilograms, but it is a pity that they have been declared "extinct", from 2003 to 2010, the largest white sturgeon in the Yangtze River. From 2003, a fisherman mistakenly caught a 3.52 meters, weighing 160 kilograms of white sturgeon, human beings in the next ten years, never seen their figure.
White sturgeon have lived on Earth for 150 million years, but since 2020, they are no longer the largest fish in the Yangtze. And the Chinese sturgeon naturally on the "throne", because it is currently the highest known size limit of the Yangtze River fish. Because it carries the same "primitive" biology, the sturgeon's size limit is larger than that of many freshwater fishes.
(Chinese sturgeon)
According to the data, the Chinese sturgeon weighs about 50 to 300 kilograms, and the largest Chinese sturgeon is 5 meters long and weighs 600 kilograms, which should be the largest existing freshwater fish in the Yangtze River Basin. Just It is not so easy to capture the figure, but the unfathomable Yangtze River Basin, whether there is a bigger sturgeon, it is not known.
The list of the largest freshwater fishes also includes a giant catfish that is a household name. They are found in Asia, Europe, and are common in our waters.
It was one of these wild catfish that attacked two boys in our village. Because the dam is abandoned for too long, the catfish inside the unbridled growth, the largest has more than a hundred pounds, can easily chickens and ducks a mouth off, the two boys accidentally broke into the dam, the catfish sensitive to living things, they took them as prey.
This fish is terrible because they can grow a lot of size, to the adult size is not only unrestricted, will continue to grow up, as long as the environment is suitable, adequate food, they may grow to 200 ~ 300 pounds.
If there are no natural predators, and growth is not interfered with, then their limit is how big they can grow, leaving a lot to the imagination.
For example, the Mekong River catfish, the maximum can grow to 2.7 meters long, weighing 586 pounds, although the body length and sturgeon have a large gap, but in the weight of the bite has been very tight. The Yangtze River Basin is a catfish distribution, people call the "Yangtze River catfish", this carrion for food, not picky about the environment of the fish, in the Yangtze River ten years after the ban on fishing can surpass the sturgeon, although the odds are not good, but there is still a possibility.
The largest fish in the Yangtze River is the Chinese sturgeon, the king of freshwater fish, from 2020 after the white sturgeon declared extinct "on the throne", became the largest freshwater fish in the Yangtze River.
But the throne of the king of freshwater fish, many fish also coveted, such as catfish is the Chinese sturgeon competitors. Although the current record of catfish is not as big as the Chinese sturgeon, but after ten years of fishing ban, the growth pattern of the wild catfish in violation of common sense, whether and Chinese sturgeon and the Chinese sturgeon to compete, become the Yangtze River's largest freshwater fish, but also need to wait and see it!
In the discussion of the "Yangtze River biggest fish how big" at the same time, this is also in a reflection. Because the Yangtze River in recent years, environmental pollution has increased, uncontrolled human activities make a lot of fish to the endangered, or even extinction! If this continues, the Yangtze River will have more fish extinction, the Chinese sturgeon may be the next, that later see the big fish will become a luxury.
So this inspires us to respond to the 10-year ban on fishing, protect the Yangtze River mother river, so that man and nature in harmony **** survival, future generations of children and grandchildren will also be able to witness, feel the shock of nature.
In November 2014, Mr. Zhang and his wife, the two normal out fishing, in the walk to a section of the water after the net suddenly came a huge commotion, the collection of nets when the nets were broken several large holes, the strength of this fish is also very big, is a big guy, almost also dragged the couple to the water it.
Soon, the fish came to the surface, can see the fish look, Mr. Zhang seems to realize what, suddenly stopped the action of the net, it is a national level of protection of the Chinese sturgeon. But they did not dare to risk unlocking the net, for fear of hurting the sturgeon, so they called the local fisheries department, so that the experts came to identify and check.
Finally, after identification, this is a female Chinese sturgeon, long 3.3m, weighing 700 pounds, and in the prime of life, this is the current base of people see the largest surviving Yangtze River sturgeon, it should just come back from the sea want to spawn, and is now in the pregnancy stage, good in the report in a timely manner, the sturgeon did not suffer too serious injuries in the relevant departments of the rescue and treatment, and soon recovered! The good report in time, the Chinese sturgeon did not suffer too serious injuries, in the relevant departments of the rescue, quickly recovered, but because of the damage to the Yangtze River environment, and not the first time to let it go back to the Yangtze River, but let it recuperate for a period of time, and finally wait for a completely good after the release it back to the Yangtze. This should be considered the largest fish in the Yangtze River Basin at present, but due to the dam's barrier, it should only be able to appear in the lower reaches of the river, and there should be no reservoir inside. Now the wild Chinese sturgeon is also out of a very endangered situation, if the Yangtze River environment has not been improved, the Yangtze River Chinese sturgeon will be in danger of extinction.
This is a kind of fish with the dinosaurs a period of time, the maximum can be as long as 750cm, is China's largest freshwater fish, because of its muzzle and the elephant's trunk is very similar, so we also call it the elephant fish. Unfortunately, this fish has now been declared extinct. It was officially declared extinct on December 23, 2019, and in fact, the Chinese white sturgeon has not been seen much after 2013 outside, and it is not known whether it will be seen in the future. As the environment changes, more and more fish are going to disappear.
I think there are hundreds of pounds of big fish in there, why do you say so, let's analyze. The upper reaches of the Yangtze River, there have been people caught 200 pounds of giant carp, there are people caught more than 300 pounds of big mackerel, which proves that in the Yangtze River, this ancient river is still a lot of huge "ancient" creatures. At the same time, there are people see a 3-meter-long giant creature, and later after research and investigation, found that this is a giant catfish. All phenomena show that the Yangtze River is a lot of fish can break through their own limitations, grow to an incredible point, even if we are a few common domestic fish, can grow to hundreds of pounds.
Therefore, I think that even if there are no white sturgeon or Chinese sturgeon in the Yangtze reservoir, there are still some huge common fish.
Why can the fish inside grow so big? Let's take catfish as an example. Catfish more normal life expectancy is 70 years, and is a kind of fish has been eating has been long, usually live in the water bottom, this is a kind of unlimited growth of fish, once in Russia, someone caught a few meters long, hundreds of pounds of species of large catfish, and the Yangtze River inside the catfish is the same species, for the six-bearded catfish. In the Yangtze River Reservoir this resource-rich, water quality is not bad environment, it is entirely possible that there is a huge catfish presence, do you think?
The construction of the Yangtze River dam, cost a huge amount of money, the experience of a long time, the construction of a very symbolic giant dam, the construction of the dam in the long run is a good thing for the country and the people, for the flood control and irrigation and ecological management of the environment, as well as power generation and power supply have made a very significant achievements, the dam's achievements are indisputable.
However, in our favor at the same time, the fish inside the Yangtze River has a very serious impact, especially migratory fish, the impact is more serious, take the Chinese sturgeon, they usually live in the Yangtze River estuary inside, where there is a very rich food for their growth and development. But when it comes to the breeding season, they will return to the upper reaches of the Yangtze River Jinsha River generation spawning and breeding, but due to the construction of dams, blocking the way back to them, so the annual spawning greatly reduced, which is also the reason why the Chinese sturgeon less and less. The demise of the Chinese white sturgeon and this also has a lot to do with it.
At the same time, the activities of large ships, as well as endless fishing activities, the life of the fish also has a very big impact, good in the Yangtze River now introduced a ban on fishing for 10 years of the program, I hope that this can give the Yangtze River fish have a better living environment, can be a smooth growth and development of it. We also need to take good care of the environment, otherwise there will be many treasured species, because we do not understand, and step by step towards the road to extinction.
Finally summarized, the Yangtze River Basin, the largest fish should still be our "panda in the water" of the national protection of the Yangtze River sturgeon, and the Three Gorges Reservoir inside the largest fish, it is difficult to determine, but it is estimated that there should be hundreds of pounds of fish exist, do you think?
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The Three Gorges Dam is the world's largest hydroelectric project, which was launched in 1993, and was fully completed in 2009, taking 16 years, and was completed to form a total length of 2335 meters, a storage height of 175 meters, with a capacity of 39.3 billion cubic meters, and a total area of 1,084 square kilometers of the man-made lakes - Three Gorges Reservoir. From the completion to today, has been the past 12 years, there is a problem many partners are very interested in, that is, storage of water for such a long time in the Three Gorges Reservoir there is no big fish? How big is the biggest fish?
Today we're going to unravel this mystery for many of our little friends.
The Three Gorges Dam is located in the upper reaches of the Yangtze River, which is the largest river in Asia. The Yangtze River is a unique living system composed of several ecosystems***s such as main streams, tributaries, lakes, wetlands, etc. It is also one of the most prosperous rivers in the world in terms of biodiversity. However, among natural disasters, flooding is one of the typical representatives. The establishment of the Three Gorges Dam effectively controls the formation of floods and protects the lives and properties of people in the vicinity, and as the largest hydroelectric power plant in the world, its existence reduces environmental pollution on the one hand, and provides a large amount of energy for the people on the other. However, everything has its advantages and disadvantages, the Three Gorges Dam from the beginning of the preparations for the construction of so far, water conservancy engineering experts and ecological experts of the debate has not stopped, this is because the Three Gorges Dam will indeed cause damage to the original water ecology. And this problem has a lot to do with the "how big is a fish" we are going to discuss today.
The Yangtze River as China's mother river, its waters are rich in fish resources. According to statistics, there are as many as more than 400 species of fish in the Yangtze River basin, including about 350 species of pure freshwater fish and as many as 156 species of endemic fish. In the many fish, the biggest is undoubtedly has a " King of the Yangtze River fish " known as the Chinese sturgeon . Chinese sturgeon is an ancient fish, they are early in the dinosaurs have not yet appeared in the Triassic period has appeared on the earth, and in the hundreds of millions of years of evolution, the Chinese sturgeon is still retaining the ancient characteristics (fish bones between bony fish and cartilaginous fish), is a living fossil species, known as the "aquatic giant panda".
As a large fish, the sturgeon's lifespan can be up to 40 years, in which 40 years, the sturgeon can grow to 5 meters long, more than 500 kilograms of weight, is the world's largest freshwater fish.
The Chinese sturgeon is a migratory fish, and they will live in the ocean for 9-18 years, reaching sexual maturity, and then migrate from the estuary to the Yangtze River basin. The breeding grounds of the Chinese sturgeon are located in the upper reaches of the Yangtze River, and there are as many as 22 known spawning sites for the Chinese sturgeon. But from 1981, after the establishment of the Gezhouba Dam, blocked the migratory channel of the Chinese sturgeon, resulting in the ocean in the Chinese sturgeon can only be in the lower reaches of the Gezhouba Dam spawning, and originally in the upper reaches of the Chinese sturgeon can not go back to the sea, can only be in the Yangtze River to survive. However, for migratory fish, they are unable to live in the Yangtze River all their lives, so with the passage of time, the Chinese sturgeon that may have existed in the Three Gorges Reservoir also disappeared.
Therefore, the largest freshwater fish, the Chinese sturgeon, gradually went into extinction, and the Three Gorges Reservoir is located in the location of the original largest fish also replaced.
In addition to the Chinese sturgeon, the baiji (Chinese river dolphin), which was originally up to 3 meters long and weighed more than 210 kilograms, gradually disappeared, and although the baiji's current level of protection is "extremely endangered", it hasn't been found in the Yangtze River Basin since 2007. Based on this premise, the baiji is defined as "functionally extinct" in China. Another "general" that might have appeared in the Three Gorges Reservoir has also disappeared. (It's worth mentioning that the baiji is a mammal, not a fish, and we're briefly mentioning it here to illustrate the current ecological situation of the Yangtze River Basin)
In addition to the above two animals, the large fish will have to come from the Dashi sturgeon, cochineal fish to find it. First of all, the Dabbling Sturgeon is one of the more common large fish in the Yangtze River Basin, and combined with the fact that the Dabbling Sturgeon is a benthic fish, and a sedentary one at that, it is also present in the Three Gorges Reservoir. From the currently known catch data, the largest Dacryocypris sturgeon is about 1 meter long and weighs about 11 kilograms.
Next is the cochineal fish. Cochineal fish is also a relatively common fish in the Yangtze River Basin, although the number of overfishing in particular has plummeted in previous years, but in the efforts of scientists in China, through artificial breeding stocking, they have recovered a certain amount of wild populations. Similar to the habits of the sturgeon, the coelacanth is a sedentary fish that can survive in closed waters, and crucially, their original habitat is in the upper reaches of the Yangtze River.
In May of this year, the Jiangxi Provincial Institute of Aquatic Sciences in the Yangtze River Hukou waters scientific research monitoring, found the waters of the largest ever coelacanth, the fish 87 cm in length, body length of 70 cm, weighing 13.5 pounds. Of course, this is not the largest data of the coelacanth. The largest known coelacanth was caught by a poacher at the Fuling Yangtze River Bridge on September 14, 2021, and was measured to be 1.3 meters in length, weighing 26.5 kilograms, and a female coelacanth in labor.
Write in the end
The Three Gorges Dam is a project for the benefit of the country and the people, but these water projects have a drawback, that is, it will be the fragmentation of the natural habitat of the fish, and even block the migratory channels of some fish, thus affecting the survival of the fish. Among them, the Chinese sturgeon is a good example, if there is no dam, now the Three Gorges reservoir is located in the location of the largest fish is the Chinese sturgeon. However, the largest fish today is most likely the 1.3-meter-long coelacanth.
Of course, in order to re-establish the ecology of the Yangtze River, China has opened a 10-year fishing ban, and there are usually fish migratory corridors on the dams, which gives the fish time and conditions to thrive again. Therefore, at the end of the fishing ban, the largest fish in the Three Gorges Reservoir may be refreshed.
Anyway, the fish in the big reservoir are definitely not small. Just look at the fish that fell to their deaths during the flooding of the Xin'an River Reservoir, and you'll see how big the fish are inside the reservoir. A few years ago, I saw news reports that the Xin'anjiang River reservoir flood, dozens of pounds of fish thousands of fish out of the spillway fell dead. Downstream friends are picking up big fish, the largest more than a hundred pounds. 1976 I was in the Xin'an River reservoir in Anhui Province, I saw a fisherman shoulder a harpoon, harpoon above the fork of a thirty pounds of snappers. It can be seen that the reservoir inside the blue fish, grass carp, chained fish maximum must be more than a hundred pounds of weight.
Just preparing to build the dam I had predicted that the reservoir fish will be as big as a cow! Today, there are still people interested in this, asked the question, I want to say that the original concept: because the dam is a short-term completion of the water, the original land contour will not be quickly buried, to provide shelter for aquatic organisms, even if there are people fishing, but also will be retained in the larger size of the fish.
So, in time, to meet the conditions of the full life cycle of fish, the existence of giant aquatic organisms in the reservoir is possible.
But twenty years is not a long time, and the ultimate size of fish should not have been formed yet, over a hundred pounds can be there.
This is speculation, and it may take underwater remote sensing to find out what's actually going on.
To be honest, I'm interested.
The Yangtze River protection, ten years of fishing ban, and finally the ship in the Yangtze River is not open, the fish grow and the ship as big, environmental issues are solved. [Yawn][Yawn][Yawn]
The Three Gorges has a fish, its name is Kun, Kun's big, a pot of stew can not be, turned into a bird, its name is Peng, Peng's big, you need two barbecue grills.
Very, very big, so big that you doubt life. [teeth bared] [teeth bared] [teeth bared] [teeth bared] [teeth bared]
The Three Gorges Reservoir was built in 2006 to store water, so far it has been 15 years. Then 15 years of time, the normal fish is about 50 pounds. But is this really the case?
Building the Three Gorges Dam can be difficult. It was difficult to build a dam in the fast-flowing waters of the Yangtze. How exactly to construct it became a headache for the engineers.
Later, the engineers came up with a way, that is, in the Yangtze River next to dig a nullah, depth of 50 meters, and then in the break in the flow of boulders, the rapids in the Yangtze River, blocked into the nullah, so as to build the dam. It looks like such a small nullah, engineering department 6 years time, visible engineering difficulties.
In the Yangtze River is currently found in the largest fish is the Chinese sturgeon, weighing 1,000 kilograms, but later, never encountered such a large Chinese sturgeon. Because of artificial fishing, river pollution, Chinese sturgeon is more and more rare.
And once someone also caught more than 400 pounds of mackerel, and more than 300 pounds of catfish, so big fish, had been called a monster in the water.
It is understood that the Yangtze River currently has 424 species of fish species, there are Chinese sturgeon, Dachshund sturgeon, Yangtze River white sturgeon (extinct) and other creatures, but also contains the more common grass carp, bighead carp, silver carp, crucian carp, carp and so on.
It can be said that the Yangtze River is particularly rich in fish species, and the flow of the river, but also particularly suitable for the growth of fish, but also make the Yangtze River fish, meat more delicious.
Why the Yangtze River to implement a 10-year fishing ban, is because the species of fish is less and less, and the size of the fish is also getting smaller and smaller. Because the first Chinese sturgeon is less and less, resulting in its price is also higher and higher, but the food, but more and more love to eat, violence led to the fish people to the small size of the Chinese sturgeon also fishing, resulting in the Chinese sturgeon is less and less.
While the fish resources are reduced, but the deepest part of the Yangtze River is 103 meters, under which there is a possibility of hiding the huge size of the fish, is the fish people can not catch. After reading the above, let's speculate, how big are the fish in the Three Gorges Reservoir?
01:When the Three Gorges was built and impounded, then its water, or the Yangtze River's water flow into the Yangtze River fish follow the water flow into the Three Gorges Dam. If the fish fry, then in the dam for 15 years, naturally can not grow much fish. But with the current into the dam inside, there may be big fish, then it is naturally much larger.
02:10 years of closed season, but also let the long-flowing fish reproduce quickly, not only let the small fish grow up quickly, but also let the original big fish dodged a bullet, the weight of the 10 years, to get a geometric increase.
03:175 meters above sea level, covering an area of 1084 square kilometers of the reservoir, coupled with a wide variety of fish species, is an excellent place for fish to live. Because of the deep enough water, big enough place and enough food, it also allows fish to grow rapidly.
Conclusion:
Shrimps come out of the shallow sea, and dragons come out of the deep sea. Although the Three Gorges is not long and not as deep as the sea, it is enough to hold several hundred kilograms of fish. But with the decline of fish resources in the Yangtze River in recent years, a 10-year fishing ban is imperative, or else many years later, there may be possible fish species, we may never see again.
The dam is to raise big fish.
10 years of fishing ban in the Yangtze River, 10 years after the fish grow big.
10 years later, for the sake of environmental protection, no oil-burning ships are allowed.
In the future, all the ships on the river will use fish to pull the ship away, and dozens of fish will be able to pull a big ship away.
It is both energy efficient and environmentally friendly.
This is the first time I have ever seen a boat with a fish in it.