CATDOLL : CATDOLL: How to raise small fish fry so that they grow fast

How to raise small fish fry so that they can grow fast

If you want the fry to grow quickly, you should pay attention to the following points:

1. Stocking density: If you want the fry to grow quickly, you need to pay attention to the stocking density. If the stocking density is too high, the fry's activity space will be limited, which will affect their growth and development.

2. Adequate feeding: The growth of fry cannot be separated from sufficient nutrition. If the feeding is insufficient, it will affect the growth and development of the fry. Generally, they should be fed about 2-3 times a day, and each feeding should be finished within half an hour.

3. Disease prevention: Changes in water quality will increase the chance of fish fry getting sick. Daily preventive work should be done to ensure the cleanliness of the water. At the same time, some medicine should be regularly mixed into the food to play a preventive role.

Newly born seedlings should be separated from the big fish and raised separately. The weather is cool at this time, so pay attention to maintaining the water temperature!

It is best not to feed the fish on the first day after birth. It is best to feed them on the second day.

1. The temperature change of young fish should not exceed 1℃, so the tank for young fish should be placed in a place with high and stable temperature. In addition, young fish are also very sensitive to water quality. If the water quality of the replaced water is very different from the original water quality, it is very likely to kill the young fish. Do not change the water for young fish too frequently.

2. Young fish have poor mobility, so the water flow cannot be too strong.

3. There are several ways to feed:

1. Feed paramecium, brine shrimp, and water earthworms. Brine shrimp eggs can be bought at fish shops to hatch.

2. Egg yolk can be crushed and wrapped in gauze, and shaken in the fish tank when feeding. You can also put a small part of it in the water.

3. Feed. If the feed for big fish is solid pellet feed, you can grind it and put it into the water. The feed will be softened and the small fish can eat it.

Be sure to clean up feces and residues in time to prevent water from spoiling due to high temperatures in summer.

Because it is omnivorous, you can also feed it some green foods when it is older.

When it gets big enough, you can take care of it like a big fish.

(Young fish are weak, so if they are found to be sick, they must be treated immediately, and the dosage should not be too much).

How to raise guppy fry to make them grow fast? It's very simple

How to cultivate carp fry? What is the technology of fish breeding?

Water for seedling breeding, in addition to complying with NY5051 regulations, the transparency of the pond water is required to be 25-30 cm. Preparation of fry breeding pond, the area of ​​fry breeding pond is 1~3 mu, the pond is required to be leeward and sunny, no leakage, convenient drainage and irrigation, neat pond shape, flat bottom, silt thickness of about 10 cm, and a feeding table is set upwind. Each mu is equipped with a 0.3 kW impeller aerator. After thorough pond cleaning and disinfection, 5~7 days before the fry are put into the pond, add 50~70 cm of new water to the pond and apply basal fertilizer. Generally, 200~400 kg of fermented animal manure or 50~100 kg of human manure is applied per mu. After applying basal fertilizer, the fry are released in time when the water color gradually turns into a suitable shade of tea brown or yellow-green.

Source of seedlings: The seedlings should be from self-breeding or carp breeding farms that hold seedling production licenses. The purchased seedlings should be quarantined and must not carry infectious diseases and parasites.

Fry quality, appearance: 95% of the fry have basically disappeared yolk sacs, the swim bladder is inflated, and the fish can swim horizontally and against the current; the fish body is not black. Countable indicators: the deformity rate is less than 3%, and the injury rate is less than 1%. Fry stocking and feeding, the density of water splash stocking is 150,000. Before stocking the fry, the water needs to be tested and the fry need to be slowed down, and the yolk needs to be fed before the fry opens. The best time to stock the fry is in the evening on a sunny day.

In addition to natural bait organisms in the water, the fry also need artificial feeding. After the fry are put into the pond, they are fed with soybean milk 4 times a day. The daily amount of soybean milk is 3-4 kg per mu, which can be ground into about 100 kg of soybean milk and sprinkled throughout the pond. The specific operation should also be increased or decreased according to the water color concentration and the growth of the fry. After a week, it is increased to 4-5 kg, and artificial powder (protein content of more than 30%) is gradually supplemented at the pond side and the feeding table for transition to food acclimatization.

After the carp special compound feed (protein content of 30%) is ground into powder, it is fed along the pond, gradually moving towards the feeding table, kneading the powder and water into balls and feeding them on the feeding table to train the fry to focus on feeding. After 15-20 days of careful cultivation, the fry can grow to 2-3 cm, and then they can be divided into ponds for breeding in time to enter the fingerling stage of cultivation.

Water quality management: As the fish grow, new water should be injected in batches to increase the water volume and dissolved oxygen, so that the water depth of the fish pond can be gradually increased from 50~70 cm to 1~1.2 meters.

For daily management, patrol the pond at least 4 times a day, observe the feeding and growth status of the fry, and increase oxygen and feeding in time. Within 7 days after the fry are put into the pond, turn on the aerator early, especially in the hot season, from sunrise to sunset to prevent bubble disease. Disinfect and disinfect once after 7 days to prevent the occurrence of diseases. During the cultivation period, pay attention to regulating water quality, preventing diseases, and ensuring dissolved oxygen. Regularly check the fish body for parasites and other diseases under a microscope, and strengthen daily management. Keep a production log.

Carp fingerling cultivation, water for fingerling cultivation, in addition to complying with NY5051 regulations, the water transparency requirement is 35-40 cm. Fish species can be raised alone or in a mixed culture. Fingerling pond preparation, the area of ​​the fish pond should be 3-5 mu, and the water depth should be 1~1.2 meters. Other requirements and preparation are the same as those for fry cultivation ponds.

Source of fish species: The fish species are from self-breeding or carp breeding farms with seedling production licenses. The purchased fish species must pass the quarantine inspection and must not carry infectious diseases and parasites. Fish species quality, appearance: normal body shape, complete fins and scales, smooth body surface, strong physique, and active swimming. Countable indicators: deformity rate and injury rate less than 1%; neat specifications.

Fish fingerlings are released and fed. When the carp fry reaches the size of Wuzai, they are divided into ponds and sparsely raised in time. The stocking density of single fish fingerlings is 10,000 to 30,000 per mu. Fertilizer should be added to the pond. Fertilizer should be applied less and frequently to keep the water quality fertile and fresh. Fish fingerlings can be fed with rice bran, bran, bean cake, compound granular feed, etc. The protein content of compound feed is required to reach 30%. Fry that have not been successfully tamed should continue to be tamed according to the method used during fry cultivation. Fry that have been tamed should choose feed with appropriate particle size according to the caliber of the fry. If there is no feed with suitable particle size, crushed feed can be chosen. The daily feeding amount is determined according to the growth and feeding conditions of the fish.

1. Pond preparation: less silt, the fish pond is east-west oriented, and it is cleaned and disinfected in the usual way.

2. Fertilization: 7-10 days before the fry enter the pond, fermented manure can be applied and quicklime can be added for disinfection.

3. Release the fry: Before releasing the fry, use a fine mesh net to remove wild impurities. You can also release cheap silver carp fry to test the water, and then release the fish after everything is safe.

You need to find a suitable environment, and also pay attention to the replacement and control of water sources, so that you can cultivate seedlings. You can cultivate them by flowing water, and you also need to pay attention to the selection of area, provide a suitable environment, and pay attention to the sterilization of the environment. You also need to pay attention to the replacement of water sources.

Fish fingerling cultivation generally adopts mixed culture of 2~3 species of fish, but one species is the main one. Adult fish breeding technology Carp fry cultivation Fry breeding water In addition to complying with NY5051 regulations, the transparency of the pond water is required to be 25-30 cm.