CATDOLL : CATDOLL: What are the breeding conditions for duckbill fish? How many can be raised per acre?

What are the breeding conditions for duckbill fish? How many can be raised per acre?

1. Breeding site: For pond breeding, the water depth should be kept above 6 meters. Use quicklime to disinfect before use, and add fertilizer to supplement the fertility of the water body. For cage breeding, choose an area with good water quality and disinfect and clean the cage. 2. Fish stocking: Select high-quality seedlings with strong physique, uniform size, active swimming, and no disease or injury. The temperature difference should not be too large when the seedlings enter the box, and the fish body should be disinfected. 3. Bait configuration: In the early stage of stocking, mainly feed zooplankton, and gradually switch to floating granular bait after domestication in the later stage. 4. Water replacement: Change the water frequently, and equip with an aerator to replenish oxygen in the pool in time.

1. Requirements for breeding conditions of duckbill fish

The breeding conditions of duckbill fish should start from the breeding site, fish species release, bait configuration and water replacement.

1. Breeding site

Duckbill fish are generally cultured in ponds or cages. For pond culture, the water area should be large, the water depth should be kept above 6 meters, the water quality should be good, and quicklime should be used for disinfection. After disinfection, fertilizer should be added to replenish the fertility of the water body, and finally new water should be injected for breeding. For cage culture, it is necessary to choose an area with good water quality and disinfect and clean the cage.

2. Fish stocking

The fry of duck-billed fish should be selected from high-quality fry with strong physique, uniform size, active swimming, and no disease or injury. Since duck-billed fish fry are sensitive to changes in water temperature, the temperature difference should not be too large when the fry enters the box, preferably not more than ±2℃, and try to adjust it to be consistent. Before entering the box, use 1.5-2.0% salt water to disinfect the fish body for 8-10 minutes. Then take a small amount of water from the fish pond for trial breeding. If there is no problem with the trial breeding, it can be put into breeding.

3. Bait configuration

In the early stage of stocking, duckbill fish are mainly fed with zooplankton (such as bloodworms). In the later stage, after domestication, they are gradually fed with floating granular baits, supplemented with night light baits. The baits must be fresh, not deteriorated, rich in nutrition, and of suitable particle size. Feeding follows the "four fixed" principle.

4. Water replacement

The duckbill fish is very adaptable to the environment, but it is also very strict about the water quality. In particular, there must be no lack of oxygen in the water, otherwise it is easy to cause large-scale deaths. Therefore, it is necessary to equip the aerator to replenish the oxygen in the pool in time. In addition, the water should be changed every 10-15 days, and the fish and weeds in the pond should be eliminated. Of course, some aquatic plants can also be properly cultivated to regulate the water quality and increase the oxygen content in the water. Fertilizer should be added every 15 days to ensure the nutrient supply of natural bait in the water.

2. How many duckbill fish can be raised per acre?

1. The stocking density of duck-billed fish varies with the size of the fish. Generally, the stocking density of duck-billed fish fry with a size of about 10-15 cm is 20-40 per square meter. One mu = 667 square meters, which means that 13340-26680 duck-billed fish can be raised in one mu. When the duck-billed fish grow up, it is usually more appropriate to raise 2000 duck-billed fish per mu.

2. In general, when the duck-billed fish is small, the stocking density can be appropriately larger. When the duck-billed fish grows up, the stocking density should be gradually reduced.

Can I breed duckbill fish in the pond? Thank you

You can breed duck-billed fish in the pond.

Duckbill fish breeding technology

1. Breeding location

The breeding site of duckbill fish is selected in Chengqian Wadou Reservoir. The breeding area has a large water area, a water depth of more than 6 meters, dissolved oxygen of 6-9 mg/L, pH value of 7-8.4, total hardness of 20-40 mg/L, ammonia nitrogen of 0.02-0.06 mg/L, nitrite of 0.0015-0.01 mg/L, and good water quality.

2. Cage Settings

The setting of the duck-billed fish cage is similar to that of the silver carp cage. The water area with rich plankton biomass should be selected. The water flow should be stable, the cage should be sheltered from the wind and facing the sun, and the environment should be quiet. The cage frame should be a simple bamboo frame. The cage material should be polyethylene knotless mesh. The cage specifications are 5 meters × 5 meters × 2.5 meters, and the mesh size is 2.5 cm. Duck-billed fish are afraid of light, so the surface of the cage should be covered with a black film.

3. Stocking density

When the duckbill fish is raised alone, there are 80 to 100 per mu when the body length is 50 to 60 cm and the weight is 1 kg, and 40 to 50 per mu when the body length is 2 to 3 kg. When it is mixed, there are 50 to 70 per mu when the body length is 25 cm, and it grows to 1 kg by the end of the year. There are 20 to 50 per mu when the body length is 50 to 60 cm, and it grows to 2 to 3 kg by the end of the year. There are 7 to 8 per mu in the third year.

Additional information:

1. Seedling selection

Select high-quality seedlings that are strong, active, neat, disease-free and uninjured. The stocking density is 20 to 40 per square meter. The size is 10 to 15 cm. As the seedlings of Chinese sturgeon are sensitive to changes in water temperature, the temperature difference should not be too large when the seedlings are put into the box. It is better to not exceed ±2℃ and try to adjust it to be consistent. Disinfect the fish body with 1.5% to 2.0% salt water for 8 to 10 minutes before entering the box.

2. Scientific baiting

In the early stage of stocking, plankton (such as bloodworms) is mainly fed, and then gradually acclimated to feed floating granular bait, supplemented by night light bait. The bait must be fresh and not deteriorated, rich in nutrition, and of palatable particle size. Feeding follows the "four fixed" principle.

When the water temperature is between 20 and 30 degrees Celsius, the daily feeding rate is 1.5% to 3%; when the water temperature is below 20 degrees Celsius, the daily feeding rate is 0.5% to 1.0%. The specific feeding rate should be adjusted in time according to the feeding situation, weather, water quality, etc. The feeding frequency is 3 times a day, at 07:00 to 08:00, 11:00 to 12:00, and 18:00 to 19:00.

References Sources:

Baidu Encyclopedia - Duckbill fish