CATDOLL : CATDOLL: There are many methods for breeding live mandarin fish. What are the methods for breeding live mandarin fish?

There are many methods for breeding live mandarin fish. What are the methods for breeding live mandarin fish?

Mandarin fish, commonly known as Gui, is a freshwater fish native to my country. It is delicious, high in protein and rich in nutrition, and is therefore widely loved by consumers. In addition, mandarin fish grows fast, has a high yield and is of great economic value. At present, mandarin fish is produced in major rivers, river systems and lakes in all parts of my country except the Qinghai-Tibet Plateau, and its breeding distribution is very extensive. So how to breed mandarin fish? Let's learn about it together.

1. Pond selection

The main pond for mandarin fish breeding requires a newly opened pond that is leeward and sunny, with loam and sand as the bottom, less silt or no silt. The pond bottom should be flat, slightly inclined towards the drain, 1.5-2 meters deep, with a complete irrigation and drainage system, sufficient water source, fresh, pollution-free, and good water quality.

2. Clear the pond and cultivate water

There are two key points to pond cleaning: first, expose to the sun for 1-3 months; second, clean the pond with quicklime. After exposure to the sun, add 5-10cm of water, dig several small holes evenly around and in the middle of the pond, and dissolve the quicklime in water. Add water a few days in advance, and wait until the water quality is stable before planting seedlings. When adding water, use a dense net to prevent all kinds of debris from entering; it is recommended to cultivate a pond with fertility and stable good water. Tea seeds, organic fertilizers, inorganic fertilizers, etc. can be used. The water quality requires pH, ammonia nitrogen, and nitrite to be within a reasonable range.

3. Fish stocking

To ensure the survival rate of aquaculture, the stocking specifications must be above 3 cm. Generally, 1000-1500 3-4 cm mandarin fish are stocked per acre.

4. Feeding

Providing palatable, sufficient and healthy bait fish is the basis for the success of mandarin fish farming. Mandarin fish feed on live fish and shrimp throughout their lives. Different growth stages have different requirements for the specifications and food intake of bait fish. Specifically, during the fish seed breeding period, bait fish accounts for 50%-70% of the body length of mandarin fish, and the daily food intake accounts for 50%-70% of the body weight of mandarin fish. During the grow-out period, bait fish accounts for about 30% of the body length of mandarin fish, and the daily food intake accounts for 10%-20% of the body weight of mandarin fish.

5. Daily management

(1) Patrol the pond frequently: If you find a slow-swimming or dead mandarin fish, check it immediately and pull it ashore. Observe whether there are enough bait fish and whether the mandarin fish are chasing fish normally. In addition, you should learn to observe the mandarin fish's feces. If the feces is loose and has yellow at the end, it may be due to enteritis. Finally, you must implement anti-theft measures such as selling it for a profit.

(2) Oxygenation: Dissolved oxygen limits production. More oxygen will definitely increase production. At the same time, oxygenation must be known. It is recommended to turn on the aerator more often on rainy days, at night, and on the day when fish are added. For mandarin fish ponds with thin and turbid water, it is not necessary to turn on the aerator during the day on hot and sunny days.

(3) Water quality management: Ammonia nitrogen, hydrogen sulfide, nitrite and pH value in the pond need to be tested regularly, and biological agents should be used regularly to regulate water quality.

In general, mandarin fish farming is highly profitable, but if you want to earn better income, it is crucial to master scientific farming techniques. The focus is also on providing a good living environment based on the growth habits of mandarin fish.

When breeding live crucian carp, you must pay attention to temperature issues and feed issues. Never feed live mandarin fish with low-quality feed. You must also pay attention to water quality issues. Never let live mandarin fish grow in an environment with poor water quality. But I think the most important point is that when breeding live mandarin fish, you must pay attention to safety issues and never let yourself get hurt.

When breeding live mandarin fish and improving the quality of the fish water, you should plant more aquatic plants, add some nutrient solution to the water, and feed the fish every once in a while. This will allow for better balance and ensure that the fish live fatter.

Pay attention to the choice of pond, so that artificial breeding can be carried out, or the person who understands the breeding method can also change the water source regularly and pay attention to the choice of feed. During the breeding process, you must pay attention to the selection of species. Outdoor breeding is possible.

It can be artificially bred or raised outdoors. It is important to choose a high-quality water source, pay attention to the surrounding environment, pay attention to the cultivation of fry, and understand basic breeding techniques.

What are the techniques for breeding mandarin fish? How to breed mandarin fish healthily?

At present, the breeding of mandarin fish can be divided into three stages: fry cultivation stage, fish fingerling cultivation stage and commercial mandarin fish breeding stage. The fry cultivation stage is about 3-20 days after hatching, and the fish grow into 3 cm summer flowers. This stage is completed in the seedling farm. The fish fingerling cultivation stage is to cultivate the 3 cm summer flowers into large-sized fish of about 6-8 cm, and the cultivation time is 7-15 days. This stage is the key to commercial mandarin fish breeding. In our area, earth pond cultivation and cage cultivation are commonly used.

1. Cultivation in earthen ponds

The pond area is generally about 1 mu, the water depth is 2 meters, and about 10,000 3 cm summer mandarin fish are stocked per mu.

(1) Feeding cultivation method: Feeding bait fish according to the daily food intake (or the number of fish ingested per day) of mandarin fish. In this cultivation method, the density of summer mandarin fish can be higher, and generally 12,000 fish are released per mu. Before stocking, the pond should be cleaned and disinfected with quicklime, and a filter mesh should be set up when the water is entering to prevent ferocious fish from entering. When summer mandarin fish are just put into the pond, the water level is shallower, preferably 60 cm. As the individual fish grows, the water level gradually increases to about 1.5 meters. When feeding bait fish, it should be done at a fixed time. When the mandarin fish fry are 3-6 cm long, 4-8 bait fish are fed per day, and the body length of the bait fish does not exceed 55-60% of the body length of the mandarin fish; after 6 cm, 4-5 bait fish are fed per day, and their body length does not exceed 50-55% of the body length of the mandarin fish. Seven days after the pond is filled, spray the entire pond with 0.7 PPM of copper sulfate and ferrous sulfate mixture (5:2) once to mainly prevent and control wheelworms and tricholoma.

(2) Intermediate breeding method: refers to the method of first cultivating suitable bait fish before stocking summer mandarin fish, and then stocking mandarin fish fry, so that mandarin fish and bait fish grow in the same pond. This breeding method generally stocks 8,000 to 10,000 3 cm mandarin fish per mu, and the stocking amount of bait fish is about 700,000 per mu, and the body length of bait fish is strictly controlled not to exceed 55-60% of the mandarin fish. This breeding method should pay attention to water quality management, with a water level of 60 cm at the initial stage of stocking, and water injection every 3 days after stocking, with a water injection volume of about 25 cm each time. Finally, the pond water is maintained at 1.5-1.8 meters. Disease prevention and control is the same as above.

2. Cage cultivation

The area of ​​the cage is 2-6 square meters, and its length, width and height are 2 meters × 1 meter × 1 meter or 2 meters × 2 meters × 1 meter or 3 meters × 2 meters × 1 meter. It is fixed with bamboo or wood in a pond with good water quality or outside. It is open and the cage mouth is 20-30 cm above the water surface. The cage material is 40-mesh nylon mesh. The stocking density is generally 400-800 per square meter. After 7-15 days, it will be cultivated into a large-sized mandarin fish of 6-8 cm. In the cultivation management, it is necessary to wash and change the cage frequently to keep the water quality in the cage fresh and the dissolved oxygen sufficient. The method and quantity of feeding bait fish are the same as those of earth pond cultivation. Disease prevention can be done by immersing with 3PPM copper sulfate or polished 3% salt water. It should be immersed once every 2 days before 4.5 cm, and once every 3 days above 4.6 cm.

Whether cultivating mandarin fish in earthen ponds or cages, the following issues should be noted: (1) Mandarin fish summer flowers about 3 cm in length should be soaked in 3PPM copper sulfate or 3% salt water for 5-10 minutes. (2) Oxygenation equipment should be equipped during the cultivation process, and oxygen should be added immediately when floating heads are found. (3) Every morning and afternoon, the feeding, growth and growth of mandarin fish and the changes in bait fish should be checked regularly, and the number of bait fish and their specifications should be supplemented at any time.

Ongrowing techniques

Mandarin fish adult farming is to raise 3 cm mandarin fish fry or 6-8 cm fish fingerlings into commercial fish weighing about 500 grams. The process takes about 180 days. The length of the breeding time depends on whether the bait fish is sufficient and palatable, whether the water quality is good, and whether the management is proper. At present, the main breeding methods include pond breeding, mixed breeding in adult fish ponds (small reservoirs), and cage breeding.

1. The pond is mainly used to raise mandarin fish

(1) Pond conditions: The pond should have a hard bottom, little silt, be close to a water source, be easy to drain and irrigate, and have no domestic or industrial sewage flowing in. The area of ​​a pond without bait fish should not be too large, generally 1-3 mu. Under the condition of a pond equipped with bait fish, the area should be 2-5 mu. Before stocking, the pond should be cleaned and disinfected by conventional methods to kill various disease organisms and pathogens. After filling the water, 1-2 days before the mandarin fish fry are planted in the pond, use 0.7PPM copper sulfate and ferrous sulfate mixture (5:2) to spray the entire pond once to kill water parasites and improve the survival rate of mandarin fish (especially summer flowers).

(2) Disinfection of fish species and bait fish: The stocked mandarin fish species and temporary storage containers should be immersed in 3PPM copper sulfate solution, 3% salt water or 20PPM potassium permanganate solution for 5-10 minutes. The bait fish fed regularly should also be disinfected in this way to prevent pathogens from being brought into the breeding pond from the stocked fish species and bait fish.

(3) Stocking method: There are three commonly used stocking methods:

① Directly stock 3 cm mandarin fish fingerlings. The local mandarin fish summer flower is cultivated for one year and becomes a commercial fish. The Guangdong mandarin fish summer flower can be put on the market in the same year. The stocking density is about 2,000 per mu. The initial breeding method is the same as that of cultivating mandarin fish fingerlings in earthen ponds, and then feeding mainly with bait fish. This method is simple to work, saves labor and ponds, but due to the small size of the fish fingerlings, the survival rate is generally only 50%, and the control is poor.

② Stocking 6-8 cm large-sized mandarin fish fingerlings. This method is suitable for farmers with larger aquaculture scales, generally 1000-1200 fish per mu. The advantage is that the survival rate is high, generally 85-90%, and the production is highly controllable.

③ Release one-year-old mandarin fish fingerlings, with a size of 50-100 grams per fish, and release about 500 fish per mu. The stocking specifications are basically the same. About 200 silver carp and bighead carp, and about 200 old silver carp are raised per mu. It is not suitable to raise grass carp, black carp, carp, etc. Purchase small fish fingerlings in winter and temporarily raise them in ponds.

(4) Feeding method: The sources of feed fish for feeding mandarin fish include artificial breeding and wild fish collection. The requirements for bait fish are: first, they must be alive, second, they must be of a palatable size, third, they must have no hard spines, and fourth, they must be supplied in a timely manner. The above requirements must be met as much as possible to achieve good results.