At the end of 65438+February every year, fishermen will use ice cones to cut hundreds of ice caves on the frozen surface of Chagan Lake, and then use the principle of piercing needles to enclose fishing nets several kilometers long according to the relationship between the ice caves, and then use horse-drawn winches to close the nets. Chagan Lake is listed as a national intangible cultural heritage in China. Auction of head fish is a tradition in Chagan Lake. The first net fish caught every year is auctioned by the biggest fish. Since the first fish head auction in Chagan Lake in 2003, the value of fish head has been rising.

If inflation is not considered, compared with the first auction of the first fish in Chagan Lake in 2003, the price of the first fish has soared by 2 1 and 6 1 times. Although the auction of Chagan Lake's winter catch has repeatedly set records, doubts about the fishing in Chagan Lake appear every year. Many netizens even speculated that the fish here is a bathing fish. The so-called bathing fish is a big fish shipped from other places, put into the lake, raised for a period of time before fishing. The basis of everyone's guess is that Chagan Lake sets a record of single-net fishing every year. Even if there are many fish, this fishing method cannot be tolerated. Without the supplement of exotic fish, it would have been exhausted.

However, according to some local fish heads, there are inexhaustible fish in Chagan Lake, which is related to the local traditional fishing and hunting methods. When fishing in Chagan Lake, the mesh size is strictly regulated to ensure that fry can escape the net and leave a future for Chagan Lake. On the other hand, the chubby fish in Chagan Lake is a local specialty, which is not found anywhere else. It is only produced here. Even if you want to bathe the fish, you can't find a similar fish. Different from other waters, it is a question whether exotic freshwater fish can survive in Chagan Lake, which is located in the northeast cold area of China. It is worth mentioning that Chagan Lake has dried up in history. In 1950s and 1960s, Chagan Lake was still a small fishing village, with the water area shrinking and the fish and reeds almost disappearing. Since 1970s, the local government has started ecological management, and after decades of efforts, it has finally recovered.

The endless fishing in Chagan Lake stems from the local emphasis on ecology. Fishing in Chagan Lake has been banned for many times in history, and fishermen also know the truth that fishing is inexhaustible. Fishing nets used here in winter must be more than 6 inches to ensure that small fish are not missed. The catch of Chagan Lake this winter is limited to 3 million Jin, which is less than 1% of the fish production in the whole lake. And since 1992, Chagan Lake has released100000 fry every year, so it's not that Chagan Lake can't catch enough fish, but that it knows how to recuperate, so the so-called bathing fish becomes nonsense.