The river turtle and the black river fish are not the same fish.
The longnose catfish is also known as catfish, Jiangtuan, fat tuo, and fat king fish. It belongs to the order Caturiformes, the family Catidae, the genus Catfish, and is also known as catfish. Catfish has different names in different places. Shanghai calls it "catfish", Sichuan calls it "Jiangtuan", and Guizhou calls it "Xiyu". The snout is long, with a tapered snout that protrudes significantly forward.
The mouth is lower, crescent-shaped, with thick lips and small eyes. Must be 4 pairs, small and small. There are no scales, the back edges of the hard spines of the dorsal fin and pectoral fin are serrated, the adipose fin is thick, and the caudal fin is deeply bifurcated. The body color is pink, the back is slightly gray, the belly is white, and the fins are gray-black.
Extended information:
Banzhou Wujiang Fish
Banshu Wujiang Fish (Large Mouth Catfish): long body, flat back and sides, wide and flat head; velvety jaws There are 4 pairs of teeth and barbels, and the corners of the mouth must exceed the gill openings; the dorsal and anal fins are not connected to the caudal fin, the pectoral fins have hard spines, and the caudal fin is round. The meat color is light bright red, the meat is firm, delicate and tender, and there are no intermuscular thorns.
Banzhou Wujiang fish (Longnose): The body is spindle-shaped, the head is small, the snout is pointed and long, the body surface is smooth and scaleless, the back is gray-black, the abdomen is gray-white, and there are no black spots on the sides of the body , with adipose fin. The fish meat is pink, firm, delicate, tender, and has no fine spines.
Baidu Encyclopedia - Jiangtuanyu
Baidu Encyclopedia - Banzhou Wujiangyu