Pseudosciaena crocea: Also known as "big yellow flower" and "big fresh". When coming out of the water, the body is golden yellow, the length of the tail stalk is more than three times as high, and it is generally 30 ~ 40 cm long. Weight 400-800g；; Pseudosciaena crocea is a subtropical fish, a group of offshore fish, and usually inhabits the middle and lower layers of the sea within 60 meters of water depth. It is one of the main economic marine fish in China, and its annual output is second only to hairtail. Distributed in South China Sea, East China Sea and South Yellow Sea.

Pseudosciaena crocea is commonly known as yellow croaker. Daxian. The head is blunt and pointed, the mouth is large, the mouth is in an end position, inclined, and the kiss is not prominent. The outermost teeth of the upper jaw expand into canine teeth, and the front teeth are large but sparse, and the front center has no teeth. The upper part of the body is purple brown, the lower part is golden yellow, and the luminescent particles are orange yellow. The dorsal fin is yellowish brown, the caudal fin is yellowish brown, the margin is dark brown, the buttocks, abdomen and pectoral fin are bright yellow, the mouth is white, and the mouth edge is reddish. The appearance of Pseudosciaena crocea is similar to that of Pseudosciaena crocea. The difference is that there are 8-9 rows of scales between the starting point of dorsal fin of Pseudosciaena crocea and the lateral line of Pseudosciaena crocea, while there are 5-6 rows. The second anal fin spine of Pseudosciaena crocea is longer than or equal to the eye diameter, while that of Pseudosciaena crocea is smaller than the eye diameter. The ratio of tail stalk length to tail stalk height of large yellow croaker (3.4 ~ 3.7) is larger than that of small yellow croaker (2.7 ~ 3.4).

Pseudosciaena crocea was once one of the important economic fish in China, and it is a endemic species in China. It is widely distributed from the southern part of the Yellow Sea in the north, through the East China Sea and Taiwan Province Strait, and to the east of Leizhou Peninsula in the South China Sea in the south. The fish is a warm-temperate cluster swimming fish, which often inhabits the middle and lower layers of the offshore waters within 60 meters. The reproductive season of Pseudosciaena crocea is spring and autumn. During the reproductive period, the fish migrate from the overwintering area in the open sea to the offshore in batches. After spawning, the young fish grow up in the offshore and scatter for bait. As the water temperature drops, some fish swim to the warm water of the 60-meter isobath for the winter. As a valuable economic fish, Pseudosciaena crocea has long been favored by consumers. However, due to overfishing, the resources are seriously damaged. After years of research, 1990 began to raise seedlings in batches, and commercial fish culture began in 1992.

Without expanding the scale, the output will increase year by year. Breeding provinces began in Fujian and radiated to Zhejiang, Guangdong and Hainan provinces. The culture mode has expanded from cage culture to pond culture. The specifications of stocked fish species should be neat and consistent. If it is planned to reach the commodity specifications of more than 400 grams in that year, the specifications of the stocked fish should be around 100 grams. The bait in the cultivation stage is mainly frozen pelagic fish, supplemented by powdered compound bait. The upper layer fish is cut into palatable pieces with a knife, which is convenient to process and not easy to be lost, or the fish is ground into minced meat, mixed into a lump bait with strong dryness, and squeezed into blocks with different sizes by hand to feed. Compared with fish pieces, minced fish meat has many advantages: it can be mixed with some powdered compound bait or other bait, and necessary vitamins and drugs can also be added, so it has comprehensive nutrition. During the cultivation period, the bait is usually fed once every morning and once every night. Compared with red snapper and jealous fish, Pseudosciaena crocea has the waiting point of slow feeding and small quantity. So feed slowly. It grows fastest during high temperature. In order to keep the natural body color of commercial fish golden yellow. In the later stage of culture, it is necessary to cover the cage with shade to control the light. The optimum growth water temperature is 22 ~ 26℃. Salinity1.8% ~ 2.5%, dissolved oxygen above 5ml/L, pH8.0.