Is mandarin fish aquiculture technology mature?

    mandarin fish is also known as osmanthus fish, since ancient times is a rare freshwater fish species. Since June 2019, prices have shown a straight upward trend. Reached 42 yuan per catty. The economic benefits are considerable. This has caused a large number of farmers previously breeding other species of great concern.

    mandarin fish used to be wild, after domestication and improvement, can be cultured. But t t t et al feed fish as live bait. The demand and supply of live bait fish should be economical, dependence problem is prominent. In addition, raising 1 kg of mandarin fish needs 4-6 kg of live bait, and the ratio of 1:4 breeding area occupies a large amount of land resources, which restricts the development of the mandarin fish industry. After the popularization of feed, it is good for the mandarin fish industry in terms of national policies, resource saving and simple operation. After the breakthrough of California perch feed and the corresponding breeding technology, many enterprises set their eyes on mandarin fish feed. mandarin fish annual output of more than 300,000 tons, hidden about 300,000 tons of feed the huge market capacity, the huge business opportunities to attract a lot of enterprises to join the mandarin fish feed promotion team.

    Personally, the mandarin fish and California perch, will replace the traditional four main fish, become the typical consumption upgrade varieties. At present, the problem of artificial compound feed of mandarin fish has been solved, and the feasibility of high density circulating aquaculture in factory is higher. Market sales do not worry, belong to the public consumer varieties. It's important to think about. But because the quality of tutang breed is not high all the time, and suffer seasonal effect, appear easily on the market the circumstance of cluster sale. Therefore, the anti-seasonal, high-density and environment-friendly recycling aquaculture model is worth considering.
At present, mandarin fish recycling aquaculture has the following advantages:
1. The quality of recycled water is stable, the mandarin fish grows faster. It can be farmed for two seasons a year.
2. The recirculating aquaculture system can release the seedlings in advance and bring them to market in advance. Wrong peak listing can achieve the highest price. Maximize economic benefits.
2. The quantity of shipment is not as large as that of tutang, which is convenient to operate. It can be sold online without going through a fishmonger. Increase customer price.
3. The domesticated mandarin fish can be directly fed with feed, which can greatly save the cost of feed fish breeding. The cost of farming has been reduced as a whole.
4. There is no mud pond sludge in the recirculating aquaculture water, and the water quality is good after treatment. There is no earthy smell in the mandarin fish. The market price is higher.

    There are two key points in mandarin fish recirculating aquaculture, one is the domestication of feed, the other is the water quality regulation of the recirculating water treatment system.
    In the process of domestication, seedlings, domestication methods, feed, water quality and other links have to be done in detail, one of the link problems, will eventually lead to failure. In fact, it is not difficult to master the specific living habits of mandarin fish, which is mainly reflected in the following aspects:
1. In the feed formula, the protein and fat requirements of the mandarin fish puffy compound feed are determined, forming a set of perfect and practical formula system; The advantage of expanded pellet feed is that it can be suspended in water. The disadvantage is that the dosage of granulated ingredients cannot be achieved, and the effect of prevention and treatment may be compromised to some extent. But after several years of improvement, the expansion of slow sedimentation materials were developed, the use of mandarin fish farming is not a problem.
2. In the domestication mode, through the exploration of various domestication modes, it is found that cage operation is simple, low cost and high domestication rate, which is a better way;

3. In the research and development of feeding stimulation methods and equipment, through continuous experimental research and development and upgrading, from the initial flushing type to the spray type, and then gradually improved to the current drum type. With this complete set of feed, equipment and training methods, the success rate of training seedlings in a single batch can reach 80% or even higher.
    In terms of the cooperation of the circulating water treatment system, the close cooperation of the circulating water treatment equipment is needed to maintain the conditions of high-density breeding. The content of COD, ammonia nitrogen and nitrite in the water reaches the standard after filtration, biochemical, heating, oxygen increasing and biological filter. And temperature, dissolved oxygen, PH and other indicators are constant in a certain range. In this way, not only the cost of the recirculating aquaculture system will be significantly reduced, but the overall aquaculture risk will be significantly reduced.

    The fresh water recirculation aquaculture system mainly includes micro-filter, sedimentation tank, biological filter and other equipment. Because of the high density, pure oxygen dissolving apparatus can be added to ensure enough dissolved oxygen. Fresh water does not use a protein separator.
We can directly buy domesticated mandarin fish seedlings, directly into the recycling aquaculture system for aquaculture.