CATDOLL : CATDOLL: Can mandarin fish be farmed? How to farm it?

Can mandarin fish be farmed? How to farm it?

Breeding pond: The depth of more than 3 meters is more suitable, and some water plants can be planted in the water. Water quality: The water needs to be changed in time to ensure the water quality. In hot weather, it needs to be changed every 3-4 days. The fish excrement should also be cleaned up in time. Water temperature: The water temperature should be kept between 22-30 degrees as much as possible, so that the appetite of the mandarin fish will be stronger. Feeding: Mandarin fish eats meat and can be fed with fish, shrimp, loach and other meat. Disease prevention and control: Pay attention to cleaning and disinfection. 1. Can mandarin fish be farmed? Mandarin fish is very common in my country and is a freshwater fish. Mandarin fish can not only live in rivers and lakes in various parts of my country, but can also be artificially bred. Artificial breeding of this fish is available in various regions, and the scope of breeding is generally large, requiring the use of special breeding ponds. However, the breeding difficulty of mandarin fish is still relatively high. They have certain requirements for the surrounding water environment and have a very large appetite. Therefore, there are many problems that need to be paid attention to when breeding.

2. How to raise mandarin fish 1. Breeding pond: As mentioned above, mandarin fish are generally raised in breeding ponds. Mandarin fish is a bottom-dwelling fish, so the breeding pond should be deeper, at least about 3 meters; some aquatic plants can be planted in the breeding pond so that the mandarin fish can rest in it. The density also needs special attention, not too dense. If mandarin fish is raised together with other fish, more attention should be paid to the number of fish put in.

2. Water quality: Mandarin fish have high requirements for water quality, and their excretion is very large, which means that the water quality is easy to get dirty. Therefore, it is necessary to monitor the water quality at all times and replace and replenish the water in time when it gets dirty. Especially in hot weather, sometimes the water needs to be replaced every 3-4 days.

3. Water temperature: Although mandarin fish are relatively adaptable to water temperature and can live in water temperatures between 15-32 degrees, and even as low as 7 degrees will not endanger their lives, the water temperature will affect their appetite to a certain extent, so it is best to keep it between 22-30 degrees.

4. Feeding: Feeding is also an important step. Mandarin fish is a typical carnivorous fish, and you can feed them mainly meat. There are many types, such as small fish, shrimp, loach, etc., which contain more protein. Mandarin fish have a large appetite, so you need to provide them with sufficient food.

5. Disease prevention: At ordinary times, you also need to pay attention to disinfection to prevent the mandarin fish from getting sick. After some fish show symptoms of disease, they also need to be isolated and treated in time.

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 shallow, preferably 60 cm. As the individual fish grows, the water level gradually increases to about 1.5 meters. When feeding bait fish, regular positioning should be achieved. 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 an open pond. The cage mouth is 20-30 cm above the water surface. The cage material is a 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 carried out by immersion in 3PPM copper sulfate or 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. This 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.