Reasonable stocking densities are one of the important measures for the cultivation of large-scale fish and fish. The number of fry ponds: the fry are generally around 100,000 per acre, and squid and squid may be more appropriate, grass carp may be less appropriate, fertilizer ponds may be more dense, and new ponds and thin pools may be thinner. When the fry is raised for about 20 days, it grows to about 3.3cm, which is called summer fish species. At this time, it is necessary to carry out the first sub-separation of ponds, generally putting 1 to 15,000 tails per acre. After 30 days of cultivation, summer flowers grow to about 6.6 centimeters, and the second time it is necessary to divide the ponds, put 5,000 to 8,000 tails per acre, and then cultivate for 50 days. The fish species will reach 10 to 13 centimeters. For the third time, the ponds should be distributed between 3000 and 4000 tails per acre. This way, if they are reared until the end of the year, they can breed 200-250 kg of large fish species per acre if the cultivation is well managed. The specifications can generally be more than 5 inches. . Once down the pond, one raised in the end of the pond, it is best to put 5000-6000 summer flowers. The density of stocking must also be appropriately increased or reduced by the number of stocking fishes according to the conditions of the mountain and ponds, the amount of feed, and the level of management.
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