The first thing to do is to build a fish pond. Make use of the winter slack season to renovate small ponds, shallow ponds, dead ponds and leaky ponds. Fish ponds with better conditions should also be trimmed, first drain the pond water, excavate the thick silt after sun exposure or freezing, eradicate weeds, and heighten and reinforce the pond ridge.

Secondly, disinfection of fish ponds. The disinfection effect of quicklime in fish ponds is the best, and it can also play a direct role in fertilization. Disinfection should be carried out on sunny days. There are two methods: dry pond method and water method. Dry pond method: 6 to 10 cm of stagnant water is left in the pond, and 60 to 75 kg of quicklime per mu is used to splash the whole pond. Water-carrying method: The water depth is 1 meter per mu, and 120-150 kg of quicklime is used to uniformly splash the whole pool. Generally 7 to 10 days after disinfection, fish can be released.

In addition, reasonable stocking. According to factors such as fish pond conditions, planned yield and management level, the stocking ratio and density should be determined. The stocking amount of high-quality fish such as silver crucian carp and bream should be increased, and freshwater white pomfret, California sea bass and other varieties can be appropriately raised to meet market demand and improve economic benefits.

The most important species are released early. From the winter solstice to the beginning of spring is the best time to stock fish, because the water temperature is low during this time, and the scales of the fish are tight, which is convenient for fishing operations and transportation, which can improve the survival rate of the fish. Stocking fingerlings should be selected on a sunny day. Before the fingerlings are put into the pond, the fish should be disinfected. The stocked fingerlings should be immersed in salt water with a concentration of 1% to 2% and a water temperature of 10°C to 15°C for 10 minutes. ~15 minutes to kill germs on the fish.

Guarantee the quality of stocking fingerlings Generally speaking, stocking fingerlings should be more than 13 cm in size, fat and strong, with complete scales and fin rays, lively swimming, free from disease and injury. Such species are highly adaptable and have a high survival rate.