Fishermen in some places in Guangdong, Hunan and Guizhou will keep fish raised in fish ponds in streams and mountains for a period of time during the dry season, and then take them to the market for sale, so that the selling price will be higher. Although it looks like a "bathing fish", it is actually recognized by the locals. They all know this farming mode and agree that the fish raised in this way are delicious, so they are willing to pay a high price. This is a deal you are willing to make. It is not to deceive consumers that this fish farming model is "pure natural brook fish". On the contrary, this fish has a proper term "slimming fish".