For this problem, there are actually many factors, such as the feeding amount and the quality of the bait fed, the breeding density and level, the size and temperature of the water body, and even some factors of the fish itself can affect the growth speed of the fish. Another one is how small is the seedling you said? Is it spray or overwintering seedling? These are very different. The fry are stocked after Tomb-Sweeping Day in April, and tender buds and grass can be seen everywhere in April. At this time, the tender weeds in the field can be cut at 9: 00 in the morning to feed the fry, and the feeding amount should be 3 hours and 2 hours at 4: 00 in the afternoon.

Fish fry that have been raised for one year are called overwintering fry, which is also a kind of grass fry sold in the market at present. This kind of fry will grow rapidly after one year of re-breeding. In the Yangtze River basin, fish of this specification can reach 250 grams to 2000 grams by the end of the year, that is, small ones can grow to half a catty, while large ones can grow to 4 jins, with an average weight of 2-3 kilograms. And this kind of fish can be raised for another year (three-year-old fish) to a weight of 4-6 Jin, and the weight of a large fish is not limited to this weight. The growth of grass carp is related to feeding management. Under normal circumstances, grass carp can grow about 4 kilograms a year, but if it is carefully managed, it can grow faster.

Use bamboo to make a square feeding frame, which is convenient for feeding. The cassava stalks after feeding should be picked up in time to avoid rotting in the water and affecting the water quality. In this way, after 8 to 9 months of careful feeding with green fodder and feed, the weight of grass carp can reach 4 to 5 Jin, and the good price of meat quality of grass carp cultured in this way is more than twice as high as that of grass carp fed with feed alone.

I raised fish in the first year. Under the same stocking amount, I insisted on feeding grass carp, mowing grass in spring, fishing for aquatic plants in the river in summer, and feeding all kinds of straws in autumn, including grass, ryegrass alfalfa, etc. The fry of grass grows to 4-5 kg a year, and grass carp is not easy to get sick when fed grass, which is economical and practical.