The difference between catfish and Qingjiang fish lies in their distribution area, characteristics and brand effect.

1. The distribution areas are different.

Catfish: The scientific name of catfish is Longbill catfish, commonly known as "Jiangtuan", "Baiji", "Fat-headed fish" and "Catfish". In taxonomy, it belongs to the order Siluriformes, the family Catidae, and the genus Category. The long-snouted catfish is a rare freshwater fish in my country. It is distributed in the Yangtze River system, reaching the Yellow River in the north and the Minjiang River system in the south.

Qingjiang fish: Qingjiang fish refers to the fish produced in the Qingjiang reservoir area of ??Hubei Province. It is known as the unique aquatic product of Hubei, the "Province of Thousand Lakes".

2. Different characteristics.

Catfish: Longnose catfish has a thick and long body, a bulging abdomen, and a flat tail. Individual catfish vary in weight, generally 1500~2500 grams, and a few individuals can reach 10 kilograms.

Qingjiang fish: high in protein, low in fat, rich in a variety of vitamins and trace elements, it is a good nutritional supplement. The meat is tender, plump in flavor, high in fat, and the swim bladder is particularly plump. It is silvery white when fresh and becomes valuable fish maw after drying.

Catfish:

Qingjiang Fish:

3. The brand effects are different.

Catfish: The "penholder fish maw" produced in Shishou City, Hubei Province is famous. It has a thick glue layer, pure taste, translucent color, and unique production process. The shape of the dried product and a beautiful natural pattern embedded in the swim bladder look exactly like Bijia Mountain standing in Shishou City when looked at the light source. Hence the name "penholder fish maw".

Qingjiang Fish: It has won the title of "China's Famous Brand Agricultural Products", "Hubei's Top Ten Famous Brands of Agricultural Products" and the Gold Medal of the 8th, 9th and 10th China Agricultural Fair. The "Qingjiang Fish" trademark has won the title of "Hubei Famous Trademark" , 5 main Qingjiang fish species have passed the national organic product certification. For a long time, Qingjiang fish series products have not only been popular in the high-end aquatic product market in large and medium-sized cities in China, but also exported to more than ten countries and regions such as Europe, the United States, Japan, and South Korea.

Extended information:

Catfish generally lives at the bottom of rivers, and also moves in the middle and lower layers of the water body when foraging; in winter, it mostly overwinters in the gravelly crevices of deep water in the main stream. . Catfish is a warm-water fish. The optimal growth water temperature is 25℃~28℃. The optimal pH range is 7.0~8.4. The oxygen consumption rate is significantly higher than other domestic fish. It is intolerant to hypoxia. If the dissolved oxygen content is lower than 3mg/L , its food intake began to decrease significantly.

The catfish is a carnivorous fish, and its main food is small fish and aquatic insects. The minimum age to reach sexual maturity is 3 years old, usually 4-5 years old. The adult fish begin to mature from March to April every year, and then go up to the rapids of the river on the gravel bottom to lay eggs. The spawning period is from April to June and declines around August. The number of eggs conceived ranges from 10,000 to more than 100,000 eggs. The spawning grounds of the Yangtze River are concentrated in the meander of the Jingjiang River in the middle reaches and the Tuojiang River in the upper reaches.

Reference materials:

Baidu Encyclopedia - Catfish

Baidu Encyclopedia - Qingjiang Fish