Lead
"You know, the Three Gorges Reservoir has been storing water for 20 years since it was built, and after storing water for so long, things in the reservoir must have changed a lot.
At least, most of the fish in the reservoir have grown up, right?
More importantly, as the number of fish increases, will they continue to grow, and how big will they grow?
How big do you think the biggest fish in the reservoir can be?"
Hearing her best friend ask this question, Xiaoli frowned, and said with a puzzled face: "I also think that the fish in the reservoir will be big, but I really don't know how big the biggest fish can be."
However, no matter how big the biggest one can be, the fish in it are really breeding very well, and the reservoir can become a paradise for fish!"
The largest fish in the reservoir.
The Three Gorges Reservoir is the largest reservoir in the mainland, so how big can the biggest fish be?
To answer this question, we must also start with the fish in the Three Gorges Reservoir.
When it comes to the Three Gorges Reservoir, everyone has the impression that it is a huge dam, with a lot of water storage and a large power output, but few people think that there is still a river that spans more than 2,000 kilometers in the Three Gorges Reservoir, that is, the Yangtze River.
After the reservoir was built and impounded, the fish in the reservoir could only swim downstream in the reservoir because of the obstacles that made it difficult for the fish to pass through, and the relatively small amount of stirred sand in the Three Gorges Project.
Therefore, the fish can only have a downstream area in the reservoir where they can move.
In order to be able to adapt to long-term life in the reservoir, generations of fish have a strong ability to survive, and after breeding in this environment for many generations, the fish soon showed a strong ability to adapt to the reservoir environment.
Because the environment in the reservoir adapts to the reproduction of the fish, the fish also adapt to this environment very quickly and grow better.
At present, there are three types of fish in the reservoir, one is the fish that migrates from the Yangtze River, the other is the fish that are born to live in the waters of the Yangtze River, and the other is the fish that are not in the Yangtze River and move in from other places after the Three Gorges Reservoir is impounded.
All three types of fish have been living in the reservoir for 20 years, and they have grown differently.
Compared with other fish, the most popular fish is the very delicious hairy crab in the Yangtze River.
These hairy crabs are bred in the Three Gorges Reservoir, and in the past, the number of such delicious hairy crabs was still very small, and it was difficult to catch one, let alone local fishermen who caught hairy crabs.
Nowadays, the number of hairy crabs is increasing, not only the hairy crab farms in the villages near the reservoir are thriving, but the number of hairy crabs in the reservoir is also increasing, and it is also very delicious, because for the local fishermen, the delicious hairy crabs still have to be caught and eaten after all.
Since the increase in the number of hairy crabs, fishing and fishing with mechanical nets have increased the danger for the fish in the reservoir, and some of the larger fish will take the initiative to feel that the mechanical fishing nets are dangerous, so they will take the initiative to avoid them, but some small fish or young fish will not notice that these things that are not fish are dangerous to them.
As a result, the young fish are caught by the fishermen, while some of the larger fish escape, so the fish in the reservoir get bigger and bigger.
At present, the largest fish in the reservoir is the "six-fin white catfish", which has been living in the reservoir since it was impounded, so it has become the largest fish in the reservoir.
The reservoir is a paradise for fish.
Because the reservoir is an artificial lake, the artificial focus will also be on the growth environment of animals such as fish breeding and other fish, so now the reservoir is not only the "six-fin white catfish" fish This white catfish is very large, other fish are also growing very well, and there are some fish living in the reservoir in groups intelligently.
Now, the fish in the reservoir have grown very well, and some of the white catfish not only have the awareness to resist mechanical fishing nets, but also have developed some other abilities, such as making it impossible to see the true size of the fish, so it is easy to drop a few fish when fishing.
The fish in the reservoir not only grow well, but also produce some mutated fish as the fish reproduce from generation to generation.
These are based on fish reproduction, so this small variation becomes an acceptable ability.
In the process of reproduction, the "silver carp" in the reservoir produces some black silver carp, and the local fishermen see this black fish, they think it is a sea fish released by others, and this fish is worth millions of fish in the local area.
After the local fishermen catch the black fish, they will directly sell the fish to other places in exchange for a lot of money, and the released fish, the local fishermen will catch it themselves, so for the locals, whose things will not be sold to others, so the locals generally do not release the fish, so the fishermen feel that there are a large number of black silver crucian carp in the reservoir.
The fish in the reservoir are not only black silver carp, but also a fish that hits things with its head.
In the process of life, this fish will hit the front thing with its head in order to detect the safety in front of it, so that it can ensure safety.
Therefore, in the process of life, fish will evolve the habit of hitting things with their heads.
The size of the fish in the reservoir.
So how big can fish grow in a reservoir?
In the final analysis, the size of the fish in the reservoir is still based on the source of energy.
There are three main types of energy sources for fish, one is to devour energy from the outside, one is to produce energy from within, and the other is to actively transform one's own energy from the outside.
The first two energy conversion methods, generally can only let the fish grow to a certain extent and then stop, the most can make the fish grow up is the energy of the outside world to actively convert their own energy, and this energy conversion method can generally be seen by everyone, not often seen, but everyone in the process of raising fish, fish can eat and grow, this is also because the fish are used to grow in the place has enough energy.
In the reservoir, the growth rate of fish has a great relationship with the abundance of food, just like the growth of humans, if the hunger period is too long, humans will become thinner, and if after a long period of hunger, humans will enter the stage of feeding for a period of time, they will grow very fat.
It's the same with fish when they grow, if they don't have food for a long time during the growth process, they will keep getting smaller, and if they can eat food all the time, they will keep getting bigger.
The big fish in the reservoir have just been bred and there are already hundreds of species of fish of all sizes, so in the future, the size of the fish will definitely get bigger and bigger.
epilogue
The fish in the reservoir have now multiplied in a certain amount, so it is necessary to protect the fish and prevent someone from deliberately destroying the ring of the Three Gorges Dam, because if the fish in the reservoir are gone, it will cause an ecological problem, so the fish in the reservoir are also very important.
It is hoped that local governments will increase the protection of fish.