CATDOLL : CATDOLL: Yellow thorn fish is a common freshwater fish, so how should yellow thorn fish be raised?

1. Yellow thorn fish is a common freshwater fish, so how should yellow thorn fish be raised?

Introduction: Yellow thorn fish, also known as yellow catfish, has tender meat, few bones and no scales, delicious taste and rich nutrition. It is a small freshwater aquaculture species with excellent reputation. Yellow thorn fish is favored by many consumers and farmers in the market, and the breeding efficiency is high. Let's introduce the breeding technology of yellow thorn fish. Let's take a look.

1. Pond conditions: Choose a pond with sufficient water source, fresh and pollution-free water, convenient drainage and irrigation, and complete anti-escape facilities. Each pond is equipped with an aerator with a power of 3.0 kilowatts. Before planting, the seedlings must be exposed to the sun and cleaned. 2. Stocking of seedlings: The seedlings are required to be strong, without injuries on the body surface, with consistent specifications, and sufficient stocking at one time. Generally, about 6 million tails are stocked per mu, with a specification of 5-10 grams. After 15-20 days in the pond, put in some filter-feeding fish that have no conflict with the yellow croaker in terms of feeding habits. 3. Feeding: If the fry of compound feed has been tamed during the fry stage, the compound feed can be fed directly. If the fry is not tamed, the fry will be tamed according to the taming part of the fry. When training, pay attention to the small amount of feeding each time and the prolonged pause time of feeding. Generally controlled at about 8 seconds. 4. Daily management: Inspect the pond three times in the morning, afternoon and evening, improve the water quality by adding fresh water, fertilizing, spraying drugs or turning on the aerator, and prevent diseases and floating heads. 5. Disease prevention: Yellow catfish has strong disease resistance and few diseases, but poor feeding and management can also cause diseases and losses.

Yellow catfish is a common freshwater fish. Many people like to use it to stew soup, especially yellow catfish old-fashioned tofu. In short, it is a must-have dish for every family. However, yellow catfish is a hairy food. People with chronic diseases, breast-bronchial asthma, lymph tuberculosis, and lupus erythematosus should avoid or be cautious about eating it. Finally, if you want to make money by breeding yellow catfish, you must do these three things well, that is, reasonably reduce the breeding density, appropriately shorten the breeding cycle, and choose hybrid seedlings.

Yellow thorn fish mainly feed on aquatic insects, mollusks, shrimps, small fish, etc. It likes to live at the bottom of the ditch and grows slowly. Some live in fresh water; some live in sea water; and some live in both fresh water and sea water. Yellow thorn fish has strong adaptability and is resistant to low concentrations of oxygen. The optimal water temperature for growth is 22℃～27℃. It grows slowly. Common individuals weigh 200～300 grams, and the largest can reach 500 grams. Yellow thorn fish is an omnivorous fish that mainly feeds on animal feed.

Newly hatched fry rely on their own egg yolk for nutrition. In the seedling stage, they feed on rotifers, cladocerans, water earthworms and other insects. When they are artificially cultivated, they can be fed minced fish meat, rubber paste and minced clam meat.

In the adult fish stage, various small fish, shrimps and mollusks can be fed, and artificial compound feed can also be fed. It is best to mix animal live bait and fresh bait into part of plant bait and feed them.

The water source of the fish pond must be sufficient. It must be exposed to the sun before closing. The pond must be cleaned and disinfected in advance. Then, an aerator must be installed in the pond, and the fish must be fed and managed on a daily basis.

Yellow thorn fish should be raised in ponds with sufficient water resources and good water quality. Just pay attention to adding new water and feeding the fish appropriately.

Put it in a fish tank, change the water regularly, and feed it fish food. Fish really need water.

2. What should you pay attention to when raising yellow catfish?

When we are raising yellowtail, we need to pay attention to the following points:

1. Pay attention to the water quality, because this is where they live. If their living environment is not well protected, it will easily cause their death.

2. When we feed them, it is best not to feed them too much, otherwise it will easily cause them to die of bloating, which is not cost-effective.

3. Clean the water tank in time so that they can live in clear water, which is more beneficial to their health.

Pelteobagrus fulvidraco is a tropical fish. There are indeed many things to pay attention to when raising it. Today I will share with you:

1. Be sure to maintain the water temperature. Try to control the water temperature at around 20 to 25 degrees, and change the water regularly to maintain the nutrients in the water.

2. Don’t put too much food in the fish’s mouth, because this kind of fish will die from overeating, but it will never die from starvation.

3. The placement of the fish tank is also important. It must not be placed in the sun, and the fish cannot be exposed to the sun for a long time.

There are three things to pay attention to when raising this kind of fish: 1. Pay special attention to the water temperature. This kind of fish has very strict requirements for water temperature, which generally needs to be controlled at 20 to 25 degrees! 2. Pay attention to maintaining the water level. If the water level drops significantly, add water in time. At the same time, avoid direct sunlight. When the sun is strong, the fish pond should be shaded under appropriate conditions! 3. Be careful not to feed too much each time, because this will restrict the healthy growth of the fish to some extent!

The water body should be kept at a high level of dissolved oxygen. Yellow catfish has a high requirement for dissolved oxygen in pond water, so when mixed culture is required, the water quality should be fresh and the dissolved oxygen should be sufficient. New water should be added in time during the growing season, and the water should be changed frequently during the high temperature season. It is better to keep the water flowing slightly. In addition, after the yellow catfish is mixed in the fish pond, it is no longer suitable to mix it with other carnivorous fish. Yellow catfish should not be mixed in the breeding pond of freshwater swamp shrimp and freshwater crayfish.

Yellow catfish is a scaleless fish. In addition to breathing with gills, it can also breathe with skin. When there is insufficient dissolved oxygen in the water, yellow catfish will swim to the surface of the water and absorb oxygen in the air with its skin.

Because of this characteristic of yellow catfish, many farmers do not install aerators, or use them less frequently to save electricity. This is actually harmful, because skin respiration is only an auxiliary breathing method for yellow catfish. If it lasts too long, it can easily cause damage to the fish, and in severe cases, it may die from lack of oxygen.

Electricity bills account for a certain proportion of breeding costs, but you must never cause tragedy in order to save electricity.

3. Technical requirements for breeding yellow catfish and how long is the breeding cycle

Pond: Depth is between 1.5-2.5m, remove the sludge from the bottom of the pond and disinfect. Fry: Stocking is carried out in March and April, 2000-3000 fish (20g/fish) are stocked per acre. Feeding: Before May, the feed amount is 2-2.5% of the fish weight; from June to August, the feed amount is 4-5% of the fish weight; after September and October, the feed amount is 1-2% of the fish weight.

1. Technical requirements for breeding of yellow catfish

1. Pond treatment: The depth of the pond for breeding yellow catfish should be controlled between 1.5-2.5m (suitable water depth is 2m), remove the excess silt at the bottom of the pond (the thickness of the silt is generally not more than 10cm), and expose it to the sun for several days for disinfection. 10-15 days before stocking, use 50-75kg of quicklime or 7-10kg of bleaching powder per acre of pond to sprinkle the pond. After a few days, apply 50-200kg of decomposed organic manure per acre of pond to cultivate plankton in the water. In addition, the pond needs to be equipped with mechanical equipment such as aerators.

2. Fry: In March and April, when the water temperature is stable at 10℃, yellow catfish fry are released. The size of the fry is generally above 20g/fin, and the stocking density is generally 2000-3000/mu. Before stocking, select strong, healthy, disease-free and complete fry, and then soak them in 3-5% salt water for 10-15 minutes. Before stocking, float the container containing the fry in the pond water and wait until the water temperature of the two is close before stocking.

3. Feeding: Feed twice a day, the first time at 6 pm, feed 3/5 of the daily amount, and the rest at 10 pm. Before May, the feed amount is 2-2.5% of the fish weight; from June to August, the feed amount is 4-5% of the fish weight; after September to October, the feed amount is 1-2% of the fish weight. The protein content of the feed is required to be 35-45%, and the crude fat is 5-8%.

4. Water quality: Keep the water transparency at 35-45cm and the pH value at 6.5-8; during May and June, change the water once a month, inject about 30cm of new water each time; during July to September, change the water once every half month, inject about 15cm of new water each time, and keep the water depth at about 2m. Use an oxygenator to aerate the pool water for 2 hours at noon on a sunny day to keep the dissolved oxygen concentration in the water above 3mg/L.

5. Disease prevention: Stir the sludge at the bottom of the pool regularly with a wooden stick to discharge the poisonous gas at the bottom of the pool; appropriately apply biological agents such as EM bacteria, Bacillus, photosynthetic bacteria, etc. to maintain good water quality and reduce the chance of disease.

2. How long is the breeding cycle of yellow catfish?

1. The breeding period of yellow catfish is usually about 12-13 months. If the ambient temperature is suitable, the breeding period will be shortened, generally about 12 months. If it is in an area with lower weather temperature, it usually takes about 13 months.

2. In addition to the influence of temperature, the type of fish farmed will also affect the breeding cycle. If all fish farmed are male, the breeding cycle is generally 10-11 months.

3. The higher the protein content in the feed, the faster the yellow thorn fish grows and the shorter the breeding cycle.