Distribution of producing area of crucian carp

Crucian carp, commonly known as Carassius auratus, Carassius auratus,

Distribution of producing area of crucian carp

The origin of crucian carp is distributed in rivers, lakes, ponds and other water bodies except the Qinghai-Tibet Plateau in China, and it has been introduced into freshwater waters all over the world.

Growth conditions of crucian carp

Crucian carp is a widely distributed and widely adapted fish, which has a strong ability to adapt to a variety of ecological environment, from sub-cold zone to tropical zone, regardless of water depth, running water or still water, clear or turbid water, hypoxia, acid, alkali and other environments.

Crucian carp generally prefer to live in shallow bays, lake branches and ponds with overgrown plants and slow water, and are not demanding on water temperature, food, water quality and spawning grounds, and can grow and breed in an unbearable environment that other farmed fish cannot bear.

Crucian carp is a kind of wide-temperature fish, the water temperature is about 10 ℃ or even 32 ℃ can absorb and digest food, can live for a long time in the case of low oxygen content in the water, only when the oxygen content is low to 0.1mg / L, it begins to die, and can grow and reproduce in strong alkaline (PH=9) water.

Species classification of crucian carp

1. High-backed crucian carp: high-backed crucian carp is a dominant population developed in Dianchi Lake and its river system in Yunnan in the mid-1970s, with the characteristics of large individual, fast growth, strong fecundity and so on. It gets its name because of its high back. Individual up to 3000 grams, strong hydrophilicity, not suitable for raising in the mainland.

2. Founder silver crucian carp: founder silver crucian carp originated in Shuangfeng Reservoir, Fangzheng County, Heilongjiang Province, is a better variety of silver crucian carp. Founder silver crucian carp back is black-gray, body side and abdomen deep silvery white, the largest individual weight 1.5 kg, generally about 0.5 kilogram.

3. Pengze crucian carp: Pengze crucian carp is an excellent crucian carp breed selected by fishery scientists in Jiangxi Province. It has delicious meat, high meat content and rich nutrition. Plump, easy to transport, easy to temporarily raise, easy to hook, conducive to live fish on the market, but also a kind of production and fishing and development of fish.

4. Qihe double-backed crucian carp: Qihe double-backed crucian carp gets its name from a mountain river flowing from east to west in Qi County, Hebi City, Henan Province. The Qi River does not freeze all the year round, and from January to February, the water temperature is still above 10 ℃, and there are numerous weeds on both sides of the Qi River bed. The excellent ecological environment has created good conditions for the growth and reproduction of crucian carp in Qi River. Qihe crucian carp meat is tender and delicious. According to ancient records, Qihe crucian carp, together with seedless dates and tangled duck eggs, are the three major local tribute.

In addition to the above several excellent crucian carps with great economic value, there are Longchi crucian carp in Liuhe County, Jiangsu Province, Hailar silver crucian carp produced in Hailar region, Inner Mongolia, and so on. Their common characteristics are large, tender meat and delicious taste. Are loved by the local people.