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1. The biological characteristics of the moon plover The moon worm is a benthic fish. He likes to live in rivers, lakes, ponds, ditches, and creeks with luxuriant weeds. It lurks in the night and lurks in the grass or caves during the day and night. Come out for food; for meaty fish, eat live fish, shrimp, aquatic insects and other live food, but also eat a small amount of aquatic plants. Monsoon is a wide-temperature fish, and its survival temperature is 1 to 38°C.
The optimal water temperature for growth is 15-30°C. Water temperature is below 12°C and feeding is stopped. In winter, it is plunged into caves or mud layers for winter. The ability to withstand hypoxia is very strong. When the water is deprived of oxygen, the head can be exposed to the surface of the water. With the help of oxygen in the air in the organs, it can live for a long time even in the water-less or water-free wet zone. Good jump, And there is a tendency to run back upstream. The month of the month's breeding season is from April to July each year. The sexual maturation age is two years of winter. Under artificial breeding conditions, sexual maturity can be achieved at the first winter, and the absolute amount of eggs is 2000 to 8,000 grains/tail. The eggs are spherical. Golden yellow, containing oil globules, floating eggs, eggs produced after the formation of block. The spawning type is batch spawning type. The broodstock has the instinct to protect the eggs and protect the young.
2. Adult fish breeding technology
The adult fish culture of Yuesao can be cultivated as a single fish or a mixed fish, but the effect of mixed culture with the four fish is not ideal, and the effect of monoculture is better.
2.1 Preparation of aquaculture ponds
It is possible to dig pits and build earthen ponds in the corner of Tin Tau, and it is also possible to use the open space behind the front room to make cement ponds. The earthen pond area is generally 0.2-2 acres, the cement pool area is 20-80 square meters, the pool depth is about 1.5 meters, drainage and irrigation are convenient, there is a fish-repelling facility at the inlet, and 30% to 50% of water-living lotus plants on the surface of the pool, and use bamboo poles or The rope is fixed in a certain position, or a vine-like scaffold is set up on the pond to shade; a cylinder, a tile, a pot or a bamboo tube is set in the bottom of the water for the fish to inhabit. Aquaculture water should be sufficient, clean and pollution-free.
In the first seven days under the fingerlings, ponds should be cleared and sterilized. The quicklime or tea bran can be used to kill pests and diseases. After the third day of clear pond, it was applied to a septic tank or large grass to cultivate zooplankton. After the toxicity of the culture pond disappears, the fish species can be released.
2.2 Transport and stocking of fingerlings
The fish species to be put on the market should be of the same specifications and have a strong body and a body length of 5 cm or more. Short-distance transport can be used for fish tanks, and long-distance transportation is better with fish tanks and aeration, and avoid using nylon bags for oxygenation. Fish species are bathed with 2% saline for 5 to 10 minutes before stocking. The stocking density is generally 10,000 clay ponds per mu and 200 cement ponds per square meter. The stocking time is better from May to June, and it is best to choose sunny and windless weather from 8 to 10 am.
Channa asiatica, commonly known as the seven-star fish, belongs to the genus Odonata, which is mainly distributed in the area south of the Yangtze River. Moonberry meat is delicate, delicious, high protein content, and has the health care value of nourishing, adducting muscle, promoting blood circulation, accelerating wound healing, etc. It is very popular in southern China, Hong Kong, Macao and Southeast Asia, and the market price is relatively high. In the south of China, Yuexiu culture has formed a large scale, especially in Guangdong and Guangxi, and has achieved good economic benefits.