Catfish is a kind of freshwater fish. Often live in the river bend waters with slow water flow, deep water depth and many stones. During the day, they often lurk underwater or in crevices, and go out to look for food at night. When foraging, it also moves in the middle and lower layers of water; Overwintering in the gravel crevices in the deep water of the main stream in winter. It mainly feeds on aquatic insects and its larvae, crustaceans, small mollusks and small fish. The Liaohe River, Huaihe River, Yangtze River, Minjiang River and Pearl River are distributed in the east of China and the west of Korea, with the Yangtze River as the main water system.

Catfish meat has less tender spines, smooth taste and is very delicious. There is a folk saying that "you don't know the taste of fish unless you eat Jiangtuan", especially the long-nosed swim bladder is very fat, and the dried fish belly is a world-famous delicacy. Its meat is tender and delicious, rich in fat and without thorns. Protein content 13.7%, fat 4.7%, known as the top grade of freshwater edible fish. The most beautiful thing about this fish is its soft belly. Moreover, its swim bladder is particularly thick, and it is a valuable fish belly after drying. Shishou City, Hubei Province produces "pen rack fish belly", which is famous far and near. Its adhesive layer is thick, its taste is pure, its color is bright and its manufacturing process is unique. The shape of the dried product and a beautiful natural pattern embedded in the swim bladder take care of the light source, which is similar to the Bijia Mountain standing in Shishou City, hence the name "Gabi Fish Belly", and there is a saying that "this stone is unique, and there is no other in the world", which is really a treasure in food.