1. The head is different:
The head of catfish will be obviously larger and flatter than that of Qingjiang fish. Generally, the head of fish is larger than the body.
2. Different fins:
The catfish has only one dorsal fin on its back, and it is small.
Qingjiang fish has two dorsal fins, one in the front and one in the tail. The tail is a fleshy dorsal fin.
3. The mouth of the fish is different
The mouth of Qingjiang fish is a bit flat and wide, and the beard is relatively short, with only two whiskers.
The mouth of a catfish is arc-shaped, relatively round, and its whiskers are also very long, with four or more whiskers.
Extended information
Nutritional value
Catfish is rich in nutrients. According to measurements, every 100 grams of catfish edible part contains 14.4 grams of protein and 2.1 grams of fat. It contains 64.1 grams of water and also contains sugar, calcium, phosphorus, iron and other nutrients.
The protein of catfish contains 8 kinds of amino acids necessary for the human body. It is a complete protein and is easily digested and absorbed by the human body. Catfish has low fat content and contains a variety of trace elements, so it is a good nutritional food. The fish meat is tender, easy to digest, and has few bone spurs. It is especially suitable for the elderly and infirm and young children.
Baidu Encyclopedia--Catfish
Baidu Encyclopedia--Qingjiang Fish