What is the prospect of cold-water fish culture? What is the method?

Cold-water fish are living fossils in water. In China, there are many kinds of cold-water fish with abundant resources. The cold-water fish industry has developed for more than 50 years and has begun to take shape. If we want to enter this industry, we need to know the prospect of cold-water fish farming. What is the method?

1. What is a cold-water fish?

The concept of cold-water fish is put forward according to the living habits of fish. Usually refers to fish living in 18℃ and 23℃ waters. Cold-water fish mainly include cold-water salmon and trout, sub-cold-water sturgeon and schizothorax fish.

Second, what is the prospect of cold-water fish culture?

1, the living environment quality of cold-water fish is relatively high, and most of them live in clean and pollution-free waters, which determines their pollution-free product characteristics. Free-growing cold-water fish has tender meat, no muscle spurs, rich in unsaturated fatty acids such as EHA and DHA, and has high nutritional value and economic value.

2. From the natural conditions, China has the foundation to develop the cold-water fish culture of Salmonidae. At present, the flow of available cold water resources in China exceeds 5,000 cubic meters per second, and the potential of cold water fish culture exceeds 500,000 tons. The annual output of salmon and trout farming in 20 18 years only accounts for 8% of available resources.

3. China's cold water resources are mostly distributed in Northeast, Northwest, North China and Southwest China. Relying on local natural resources to rationally develop cold-water fish industry is of great significance to industrial poverty alleviation and the development of modern fisheries. The financial departments in many areas, according to the local actual situation, combined with the industry to help the poor. Local farmers can also attract investment according to local natural advantages.

For example, jiangkou county is located in the karst mountain area to the southeast of Fan Jingdong. There are abundant cold water resources and good water quality here, which is very suitable for cold water fish culture. By the end of 20 17, 12 has been developed and utilized, and 12 base has been built, with a breeding area of 5,000 mu and a yield of 3 100 tons. The county adopts the model of company+cooperative (or farm)+poor households, which maximizes the benefits, improves the lives of local people and solves the employment problem.

4. The cold-water fish industry in China is still in the development stage, and the breeding mode and product form are relatively simple. Through technical guidance, project support and capital introduction, aquaculture personnel can vigorously develop the cold-water fish industry, and at the same time, based on the local foundation, expand the market, develop new products and develop derivative industries based on cold-water fish. Can combine aquatic products, fisheries and tourism.

For example, Sichuan has become a big province of cold water fish industry. The cold-water fish industry featuring salmon, trout, sturgeon, elegant fish and indigenous fish has a strong development momentum, with an aquaculture area of100000 cubic meters of water and an annual output value of over 654.38+0 billion. Not only that, they also use caviar as their new business card. At present, the output reaches 20 tons, and the export volume reaches 18 tons. More than one third of the output value of leisure fishery comes from the cold-water fish industry. This year, combined with the poverty alleviation policy, Sichuan provincial finance invested 8 million yuan to support local cold-water fish farming.

Second, what is the cultivation method of cold-water fish?

1. At present, there are two main categories: salmon, trout and sturgeon. The selected aquaculture water area has good conditions and low water temperature, and the suitable temperature is 10- 18℃. You can choose spring water or clear river water as the source of aquaculture.

2. The construction of the culture pond should meet the needs of healthy culture, and it is better to have a rectangular circular structure with four corners, no dead ends, reasonable water flow and uniform distribution of fish in the whole pond. The sewage outlet of fish pond should be equipped with sewage facilities, and a fish barrier with two shutters can be set up, and inverted siphon drainage can be used;

Parallel water supply should be adopted to reduce the chance of cross infection of fish. The water supply in the fish pond is not good. If series fish ponds are used for water supply, a sedimentation tank should be set below the drain to reduce the harm of metabolites such as residual bait fish manure to the fish in the pond below.

3. Although the stocking density of cold-water fish can be increased with the increase of water exchange capacity and dissolved oxygen, if the stocking density of cold-water fish is too high, the water may be turbid and the hydration index will increase, which will further affect the fish's sense of survival and lead to slow growth and weak disease resistance.

Feed scientifically according to various conditions such as density, fish population and water temperature.

4. In order to make the cold-water fish grow healthily, it is necessary to pay attention to the sanitary conditions of the culture pond at all times during the culture process. Clean up the residue and dirt regularly. When the water source is insufficient and the water temperature in the pool is high, oxygen-increasing equipment and groundwater can be used to increase the dissolved oxygen in the water and reduce the water temperature. Sterilize the swimming pool.

5. In addition to ordinary feed, it is also necessary to put some nutritional bait such as inorganic salt on a regular basis. This is to make cold-water fish have better disease resistance and help fish accumulate more nutrition.

6, all regions in the introduction of new varieties, to do a good job of quarantine, to prevent the disease fish mixed.

The cultivation of cold-water fish needs to be combined with excellent local natural resources and supported by industrial poverty alleviation policies. Starting from the local market and developing to the periphery, many cold-water fish farmers have gone abroad now.