It is a protected animal with protection level IUCN ver 3.1 (2007). The long-snouted catfish (scientific name: Leiocassis longirostris) is also known as catfish, river group, fat tuo, and fat king fish. The long rhinoplasty body is elongated, the front is thick and short, the back is laterally flattened, the head is slightly larger, the back is raised, the upper occipital spine is rough and exposed, the snout is quite pointed and protruding, tapered, the mouth is lower, curved, the lips are thick, and the upper jaw is It protrudes from the lower jaw, has small eyes, is located on the side, has large gill openings, short adipose fins, small pelvic fins, deeply bifurcated caudal fins, dark gray back, and light belly. It often lives in bay waters with slow currents, deep water and many rocks. It mostly lurks on the bottom or in crevices of rocks during the day and goes out to look for food at night. It is distributed in the Liaohe River, Huaihe River, Yangtze River, Minjiang River and Pearl River in eastern China. The river system and western Korea are dominated by the Yangtze River system. The body length is 4.7 to 5.9 times the body height, 3.2 to 3.7 times the head length, 5.2 to 5.8 times the caudal peduncle length, and 2.5 to 2.6 times the front and back length. The head length is 2.2 to 2.9 times the snout length, 10.6 to 17 times the eye diameter, 2.4 to 2.9 times the distance between the eyes, 1.3 to 1.6 times the head width, and the mouth 1.5~2 times of crack width. The length of the caudal peduncle is 2.3 to 3 times the height of the caudal peduncle. There are 33 to 35 free vertebrae.