Overfishing makes it impossible for the wild mandarin fish population to recover, which is actually the main reason for the sharp decline or depletion of all wild fish resources in China. The two killers of mandarin fish in our local lake are gill nets and shrimp cages. Yes, and shrimp cages! It is well known that gill nets kill fish, but many people don't know enough about the lethality of shrimp cages. Because mandarin fish mostly feed on small fish such as shrimp, shrimp cages often trap many small fish and shrimp, and mandarin fish will certainly not let go of these inescapable fish and shrimp. As the top predators in the lake, they don't care about shrimp cages at all. So in the past, when fish were in a good mood, fishermen were often seen carrying shrimp cages with big mandarin fish stuck to them. The high-density shrimp cages in the lake were originally used to hunt small fish and shrimp, but in the end they became one of the culprits of the sharp decline in the number of mandarin fish.
The simplest and rudest are all kinds of illegal fishing methods such as electric fish. The population of wild Siniperca chuatsi is not high, so the all-round attack of fishermen must be the rarest and most delicate fish species in the lake, and the result must be that these rare fish such as Siniperca chuatsi are the first to dry up.
Degradation of natural environment &; Man-made environmental pollution Siniperca chuatsi is notoriously picky about the living environment: flowing water, good water quality, underwater reefs to live on, and abundant fish and shrimp. If it is not satisfied, it is difficult for mandarin fish to breed normally. In today's natural waters, it is basically impossible to maintain the original ecology except for human activities. Habitat destruction and water pollution make the already precarious wild mandarin fish population worse.
Conclusion If the above two factors cannot be changed, it is basically impossible to restore the wild Siniperca chuatsi population and other fish resources. The promulgation of the ten-year ban on fishing in the Yangtze River basin also means that the relevant state departments have begun to make every effort to reverse this serious ecological dilemma. If we can't change the status quo of overfishing, not only will there be no fish to catch, but our living environment will also face an unpredictable and complicated situation because of the loss of wild fish.