Lead
The poem "The Yellow River is overflowing, and the diving fish are still flowing against the current" is used to describe the silt of the Yellow River becoming more and more year by year, just like the diving fish in the silt, which is a puddle of muddy water on the surface, but has endless vitality hidden.
Every year, the Yellow River washes away 1.2 billion tonnes of sediment, but it is known that it not only flows through many important provinces on the mainland, but is also a river that feeds many fish on the mainland.
There are a lot of fish in the Yellow River, so how do these fish survive?
In the thousands of years that the Yellow River has flowed, what kind of creatures have survived?
Moreover, the fish in the Yellow River have been washed by the Yellow River and found that not every fish can survive, so where do those fish that can't survive the Yellow River go?
1. Fish in the Yellow River.
The Yellow River is the birthplace of Chinese civilization, and countless amazing deeds have taken place in the Yellow River Basin.
Moreover, from ancient records to the present, we can only know a little about the power of the Yellow River, but it is more difficult to understand the number of fish in the Yellow River.
However, there are many kinds of fish species in the Yellow River, and the mainland has conducted a detailed investigation and summary of the fish in the Yellow River basin, and has probably come to the conclusion that there are 183 species of living fish in the Yellow River, of which 147 species are pure freshwater fish and 36 species are river-sea migratory fish.
Just from the number of fish, it can be seen that the fish in the Yellow River basin must be very abundant, and the survival of fish in it is not relatively difficult.
What are the fish in the Yellow River, how much benefit can be brought to people's lives, all of this is inseparable from the fish in the Yellow River, many people love to eat the Yellow River carp and the Yellow River catfish, and there are many kinds of fish in the Yellow River, not only the Yellow River carp and the Yellow River catfish, but also the Yellow River bighead carp, the Yellow River dace and so on.
Among them, the story of the yellow emblem octopus and the yellow dace is also quite subtle, one year the Yellow River was brought into the Yellow River, and then the Yellow River produced some fresh water due to the lack of water, and then the Yellow River was brought on the fish, and people also found that the Yellow River carp has been cultivated for a very long time, and with the change of time, the Yellow River carp farmed is almost the same as the fish in the fresh water.
Some people even took "Yellow River Carp Picture".
No matter how famous the Yellow River carp and the Yellow River catfish are, they will not fool people, not only have a very long history in the mainland, but also spread from the mainland to all over the world, almost when talking about the Yellow River, you can think of the Yellow River carp and the Yellow River catfish.
And there are many kinds of fish in the Yellow River, of course, there are many people who have not been in contact with the doubts, which shows that the number of fish in the Yellow River must be very large, and the people of the mainland also love the fish in the Yellow River, which is not only recorded through many historical data, but also can be released from the Yellow River when the fish fry are just hatched, people will take the fish fry together, and will carry out a certain amount of breeding and conservation work.
Chinese's love and respect for fish is not only found in the Yellow River carp and Yellow River catfish, but also in other fish species, because fish can provide people with a lot of food, and fish can also bring nutrition to the land and fertilizer water to the Yellow River.
2. Freshwater fish are washed into the seawater.
Freshwater fish are very uncomfortable even if they appear on the sea surface, because the salinity in the seawater is relatively large, so that the freshwater fish will even be suffocated to death by the salinity of the seawater to their gill cells because of draining and deflating, which is not the most uncomfortable reason for the freshwater fish, because the freshwater fish have not been in contact with the seawater for a long time, and the water in the body is not the same as the water in the seawater, so that the cells of the freshwater fish will become expanded, so that the cells in it will burst. As a result, the balance of water in the body and outside of the freshwater fish is imbalanced, and eventually they will die.
If the freshwater fish have avoided the salinity in the seawater and the suffocation of the freshwater fish being drained, there is still a big hurdle to avoid in the end, that is, the temperature in the seawater is relatively low, but the ice in the seawater will melt and cause uneven cold and warm, and the temperature may change drastically, so it is difficult for freshwater fish to survive in the seawater, but the ancient Chinese had another opinion.
The ancients believed that it was impossible to survive without fish, and also firmly believed that these fish in the Yellow River would survive, and in the firm belief of the people, people finally found that there were really fish that survived, why would the fish in the sea survive?
The reason is that after the Yellow River enters the sea, the water in the Yellow River is not mixed, and it will be layered in the sea, and then these layered water will play a protective role, so that freshwater fish can survive, which is also the reason why the ancient people's firm belief was realized.
But these freshwater fish in the sea water into the sea also have to face another problem, that is, how to enter the Yellow River, you must know that the Yellow River is an estuary, from the Jiangsu area into the ocean, and from the east longitude 126 degrees through the combination of Laizhou Bay and Wei Bay in Shandong into the sea, but the mouth of the Yellow River is obviously not so big, so the Yellow River must flow through the sea for a period of time before entering the sea, and there is a question to think about, in this period of sea time, How will the fish in the Yellow River survive?
3. Freshwater fish swim upstream.
There are not only salted fish on the surface of the sea, but also an unfathomable number of carnivorous fish.
And the number of carnivorous fish in the sea exceeds all living things, so it is not easy for the fish in the sea to survive, you must know that the carnivorous fish in the sea are very greedy, if the food wants to stop it, it can't be stopped.
Carnivorous fish in the sea can eat food that is two or three times larger than it, so an important reason why fish in the sea can survive is that carnivorous fish do not eat it.
But more importantly, the sea is not completely adaptable to fish, so an important reason why fish in the sea can survive is water, but the water of the sea.
Because the water in the sea is freshwater and salt water, and when the two are mixed together, it becomes salt water, so the water in the sea can allow fish to survive in it, but the Yellow River has not been in the sea for long.
The nature of the carnivorous fish in the sea is easy to show, so some carnivorous fish still eat some fish, but some salted fish die, and in the end some fish escape, and these salted fish eventually avoid the muddy water, and they also escape the mouths of the carnivorous fish, but then a new question arises, why can these fish swim against the current?
After the sea invaded the Yellow River, the fish in the sea actually swam upstream, because the water flow in the lower reaches of the Yellow River is relatively gentle, and not only that, the plains in the lower reaches of the Yellow River are warm and the current is relatively small, and there are no rapids baptized by the sea.
Therefore, the fish in the Yellow River can swim upstream and return to the inland river again, and these fish can live like the fish in the Yellow River.
epilogue
The story of the fish in the Yellow River makes people know that people's lives are coexisting with ecology, and only by respecting ecology can people's lives be better.
People's lives are in harmony with nature in order to ensure that their lives are more fulfilling, so learning to respect ecology and nature can make people's lives more harmonious.
However, the current production of carp in the Yellow River is very small in the mainland, mainly due to two reasons, one is that the water quality of the Yellow River has been seriously polluted, so the survival rate of fish is very low, and the other is due to overfishing, resulting in a sharp decline in the number of carp in the Yellow River, which also reflects the number of surviving fish is very small, so people still have to respect nature, while caring for the environment, only if we protect the ecological environment, our life will be better, we will not lose the precious resources around us.