Is the yellow thorn fish with thorns on its back a hair product? Is it a sea fish? How much is the price per jin? Attached culture technology

Yellow thorn fish is also called angyi, huang ang, angci, steel needle, yellow bone fish, yellow tooth fish, angci fish, hunan called yellow duck call, and become a famous hunan dish. Is the yellowtail fish hair? Is it a sea fish? Can we eat the dead? How much does it cost per catty? What are farming techniques? From Wuhan fresh market to understand, the current price of yellow thorn fish in 15-20 yuan.

Is yellow stickleback hair?

Fish, shrimp, crab itself contains histamine, and histamine can make vascular permeability increased, microvascular dilation, congestion, plasma exudation, edema, glandular secretion hyperfunction and eosinophilic leukocytes increased, thus leading to the body allergy, that is, allergic reaction, induced skin diseases, such as erythema, papules, blisters, fever and so on. So it's hair.

Is yellow fish a sea fish?

Some live in fresh water; some in salt water; and some in both fresh and salt water.

Attachment: Yellow thorn fish culture technology

Monoculture:

1. Pond selection and cleaning and disinfection: select fish ponds with good water quality, sufficient water source and no pollution, with an area of 2-10 mu, pond depth of 1.5m-2.5m, equipped with mechanical equipment such as aerator. Remove excess sludge (sludge at bottom not exceeding 10cm), expose to sunlight for several days, and then clean and disinfect. 10-15 days before stocking, 50-75kg quicklime or 7-10kg bleaching powder is used to dissolve the slurry and sprinkle the whole pond. Fermented organic manure 150 ~200kg/mu is applied to improve water quality.

2. Species stocking and variety matching: from March to April of that year, the stocking specification is generally above 20g/tail, and the stocking density is generally 2000-3000 tail/mu. The breeding fish species are required to be neat in specification, bright in color, smooth in body surface, free from disease and injury, without incomplete fins and healthy in constitution. Before breeding, the fish species are soaked in 3-5% salt water for 10-15 minutes. Half a month later, the summer flower fish species with silver carp, silver carp 1000/mu, silver carp 3000/mu.

3. Feed feeding: Pelteobagrus fulvidraco is an omnivorous fish mainly fed with animal feed. It can be fed with fresh animal feed, such as small fish, shrimp, livestock waste, snail meat, etc., or fed with bean cake, peanut cake, bran, etc. or buying complete feed for Pelteobagrus fulvidraco. Feeding adopts the principle of "four fixed", feeding twice a day, feeding according to 2% to 2.5% of fish weight before May, feeding according to 4% to 5% of fish weight when the water temperature is high from June to August; after September, the water temperature will gradually decrease, and the feeding amount of concentrate will gradually decrease, and it will be controlled flexibly according to fish feeding and weather changes.

4. Water quality regulation and disease control: Pelteobagrus fulvidraco has higher requirements on water quality, maintaining water transparency of 35 to 45 cm, PH value of 6.5 to 8, injecting water once a month in May and June, and changing new water 30cm each time; Change water once every half month from June to September, and keep water depth at 1.2 to 1.5 m. Regularly turn on the aerator to increase dissolved oxygen in water. Adhere to the principle of "prevention first, prevention and control combined" to carry out disease prevention and control work. Periodically disinfect ponds with quicklime, bleach, or other agents to kill bacteria, viruses, and other pathogenic microorganisms. Pelteobagrus fulvidraco is scaleless fish and sensitive to drugs. Trichlorfon, copper sulfate and other drugs should be used with caution.

II. Interbreeding:

(1) Interbreeding is the main way of adult fish culture. It has the following advantages: First, it can ingest fish residues, small miscellaneous fish, organic debris and the like in the fish pond, and can improve the purification ability of the fish pond. The other is that Pelteobagrus fulvidraco ingests large parasites in water, which can reduce the occurrence of fish diseases. Thirdly, on the basis of not affecting the yield of main cultivated varieties, the yield of yellow catfish per mu can be increased by 20kg, and the benefit per mu can be increased by more than 100 yuan.

1. Adult fish pond breeding. Pelteobagrus fulvidraco can be bred in fish ponds for breeding four major domestic fish and fish ponds for feeding fish. Fish pond area 2-30 mu, water depth 1.5-2.0m, generally put 40-50 yellow catfish per mu, specification 3-4cm, per mu can increase about 10kg.

2. Adult crabs are bred in ponds. Catching Pelteobagrus fulvidraco in crab pond can make full use of bait biological resources in crab pond. Generally, the crab pond covers an area of 30-50 mu, and the coverage rate of aquatic plants is about 50%. After the crab species are bred, the yellow catfish of 3-5cm is put in each mu, and 30-50 fish are put in each mu, and the income can be increased by 8-10kg per mu.

3. Large water surface breeding. Generally, 40-60 Pelteobagrus fulvidraco are put per mu, with the specification of 3-4cm, and 10- 15kg Pelteobagrus fulvidraco can be added per mu.

(B), the cautions:

1. Keep the water body with high dissolved oxygen.

2. Maintain reasonable stocking density and specifications.

3. It is not suitable for breeding other carnivorous fish after breeding Pelteobagrus fulvidraco, and it is not suitable for breeding Pelteobagrus fulvidraco in freshwater shrimp and freshwater crayfish culture ponds.

4. Pay attention to the feeding and growth of Pelteobagrus fulvidraco in the process of interbreeding. If the growth specification is too small, it is necessary to supplement small miscellaneous fish and shrimp properly or feed artificially prepared special bait. When feeding artificial bait, feed the main breed first, then feed yellow catfish.

5. Pelteobagrus fulvidraco is cultivated in crab pond. Sufficient natural bait must be kept in crab pond. 300-400kg snails and some crucian carp and green shrimp with eggs can be put into crab pond in advance to allow natural reproduction for crab and pelteobagrus fulvidraco to eat freely.