Yellow-tailed fish grow fast when they eat concentrated feed such as rice bran and wheat bran. According to the relevant data, as the fry grow up, they need to be supplemented with feed, and they can continue to use fermented manure to cultivate water color, and they can also sprinkle appropriate amount of soybean milk. After half a month, when the fry grow to 3 cm, feed rice bran, wheat bran and other concentrated feed, and the daily feeding amount is 65438+ 05%-20% of the fish weight. In the process of fry cultivation, attention should be paid to regulating water quality, fertilizing and feeding regularly, and the residual bait of manure will easily worsen the water quality. Change one-third of the water every 2-3 days, and it is best to keep running water. You can also stock some daffodils and duckweeds in the nursery pond to purify the water. When the fry grow to 3-5 cm, it is necessary to carry out netting exercise and sparse stocking, and the fry specifications in the same pond should be as consistent as possible. Generally, 8,000-65,438+10,000 fish are stocked per mu with a stocking density of 3-4 cm and 50,000-60,000 fish per mu with a stocking density of 5-6 cm. After 2-3 months of cultivation, you can grow into a fish with a size of more than 6 cm, and then you can enter the cultivation stage.