Sesame sword, scientific name spotted snakehead, is an extremely precious freshwater fish. This fish is scaleless and as sharp as a sword fin, so it is named for its sesame-like spots. Guangxi specialty, growing in the Hongshui River basin (it should be the Pearl River basin), among which the "Sesame Sword" in Tiane County is the most famous. It can be cultivated artificially, but it can't be propagated artificially, so it has strong vitality.

In February, 20021,the newly adjusted list of national key protected wild animals was published, and channel catfish (only wild) was listed as a national second-class protected wild animal.

Reasons for the decrease of sesame swords

1, overfishing

Electric fish, fishing under the net to stop the river, can be said to be the first element. Take Hongshui River as an example. It was originally one of the most primitive places, but people who set sail for electric fish and cast nets for fishing abound. There is no need to discuss these two fishing methods too much, and they are both very powerful.

2, diving fishing

Guangxi calls this kind of behavior "water ghosts", and they are well equipped. It is said that the maximum diving depth can reach15m. For freshwater fish, sesame sword is the most precious and expensive.

3. Water pollution

In the past, the water quality of Hongshui River could be directly drunk. Now, due to over-exploitation, pollution is everywhere. In particular, some enterprises still cheat.

4. Overfishing

Fishing is a pastime, and it is human nature to pursue a certain amount of catch. With the help of some auxiliary tools, such as fishing boats, air cushions, bamboo rafts and other tools, dozens or even hundreds of pounds of scaleless fish are caught at a time.