CATDOLL : CATDOLL: Can yellow croaker be farmed in the north?

1. Can yellow croaker be farmed in the north?

Breeding technology of large yellow croaker and yellow croaker

Large yellow croaker is commonly known as yellow croaker. Large and fresh. The head is blunt and pointed, the mouth is large, terminal, inclined, and the snout is not protruding. The outermost teeth of the upper jaw are enlarged into canine teeth. The front teeth are larger but sparse, and there are no teeth in the front center. The upper half of the body side is purple-brown, the lower half is golden yellow, and the luminous particles are orange-yellow. The dorsal fin is light yellow-brown, the caudal fin is light yellow-brown, and the edge is black-brown. The anal, abdominal and pectoral fins are bright yellow. The inside of the mouth is white, and the edge of the mouth is light red. Large yellow croaker and small yellow croaker are similar in appearance. The difference is that there are 8 to 9 rows of scales from the starting point of the dorsal fin to the lateral line of large yellow croaker, while small yellow croaker has 5 to 6 rows. The second anal fin spine of large yellow croaker is longer than or equal to the eye diameter, while that of small yellow croaker is smaller than the eye diameter. The ratio of the length of the tail peduncle to the height of the tail peduncle of large yellow croaker (3.4 to 3.7) is greater than that of small yellow croaker (2.7 to 3.4).

Yellow croaker was once one of the important economic fish in my country. It is a local species unique to my country and is widely distributed from the southern Yellow Sea in the north, through the East China Sea and the Taiwan Strait, to the east of the Leizhou Peninsula in the South China Sea. This fish is a warm-temperate schooling fish that often lives in the middle and lower layers of the nearshore waters within a depth of 60 meters. The reproductive season of yellow croaker is spring and autumn. During the reproductive period, the fish migrate from the wintering area in the open sea to the nearshore in batches. After spawning, the young fish grow up in the nearshore and disperse to feed. As the water temperature drops, some fish swim to the warm water of the 60-meter isobath to hibernate. As a precious economic fish, yellow croaker has long been favored by consumers. However, due to overfishing, resources have been severely damaged. After years of research, batch breeding began in 1990, and commercial fish farming has been continuously expanded since 1992, with production increasing year by year. The breeding provinces started from Fujian and radiated to Zhejiang, Guangdong, Hainan and other provinces. The breeding method has expanded from cage breeding to pond breeding. The specifications of the stocked fish species are required to be uniform. If the fish species are planned to reach the commodity specifications of more than 400 grams in the same year, the specifications of the stocked fish species should be about 100 grams. The bait in the growing stage is generally frozen upper fish, supplemented with powdered compound bait. The upper fish is cut into palatable fish meat blocks with a knife, which is convenient to process and not easy to lose, or the fish is minced into minced meat, mixed into a ball-shaped bait with strong dryness, and squeezed into blocks of different sizes by hand for feeding. Fish meat mince has more advantages than fish blocks: it can be mixed with some powdered compound bait or other baits, and necessary vitamins and drugs can also be added, which is nutritious. During the growing period, it is generally fed once in the morning and evening every day. Compared with red sea bream and jealous fish, large yellow croaker has the characteristics of slow feeding and small amount of waiting. Therefore, feeding should be slow. It grows fastest during high temperatures. In order to maintain the natural golden body color of commercial fish. In the later stage of breeding, it is necessary to cover the net cage with shade to control the light. The best water temperature for growth is 22-26℃. Salinity: 1.8% to 2.5%, dissolved oxygen: above 5 ml/L, pH: 8.0.

2. How to make noodles with yellow croaker?

I Ingredients |

400g yellow croaker, appropriate amount of noodles, Shanghai greens, and minced meat

I seasoning |

Salt, mushroom powder, soybean paste, water starch, appropriate amount

| Recipe |

Clean the yellow croaker; cook the noodles and rinse with cold water; wash the Shanghai greens.

Cut the melon into two halves, fry until cooked and remove from boiling water.

Fry the yellow croaker until cooked and place on a plate. Leave some oil in the pan and add minced meat and minced garlic.

Add salt, stir-fry soybean paste, thicken with water starch, and pour over the fish.

Top with chopped green onions.

Scoop up the noodles and roll them into a ball. Place them on the rhubarb plate with the Shanghai greens.

Fish around.

Do?

3. What nutrients does yellow croaker contain?

Yellow croaker is rich in protein, minerals and vitamins, and has the effects of strengthening the spleen and appetite, calming the nerves and stopping diarrhea, invigorating qi and replenishing essence. It has a good effect on anemia, weak constitution, middle-aged and elderly people, insomnia, dizziness, loss of appetite and postpartum physical weakness in women. Yellow croaker is rich in the trace element selenium, which can eliminate free radicals produced by human metabolism, delay aging, and prevent and treat various cancers.