Channel catfish is a popular species in some parts of China, and its economic benefits are also good. Let's learn how big the channel catfish can grow and the culture technology of channel catfish.

1. How long can channel catfish grow?

A few 3-year-old fish with sexual maturity over 4 years old and good artificial feeding conditions can reach maturity, and the weight of sexually mature fish is above1000g. In pond culture, individuals with body length over 53cm and weight over 1.5 kg are more common. It is reported that the largest mature fish in the United States is 1270 mm in length.

Under pond culture conditions, the body length can reach18-19.5cm in the first year, 26-32cm in the second year, 35-45-57cm in the third year, 45-57-63cm in the fourth year and 57-26-32cm in the fifth year.

2. Culture method of channel catfish.

Usually, the spawning temperature range of channel catfish is 2 1-29℃, and the optimum temperature is 26℃. When the water temperature exceeds 30℃, it is not conducive to the embryo development of fertilized eggs and the survival of fry. The breeding season of channel catfish in the Yangtze River valley is from June to July. Larger weight (or age) lays eggs earlier than smaller weight (or age). When laying eggs, each fish usually wraps its tail fin around the other's head. The male fish vibrates violently and discharges semen. At the same time, the female fish began to lay eggs. After fertilization, the eggs become sticky, adhere to each other and adhere to the bottom of the pool.

3. Monoculture technique of channel catfish.

In the pond, it is necessary to ensure that the water source is sufficient, the water quality is fresh and the water quality is not polluted. The water depth is 1.5-2m and the area is 0.2-0.3 hectares. After clearing the pond, 800- 1500 fish with a body length of 7- 12 cm, 10 bighead carp with a body length of 20-23 cm and 13- 16 cm silver carp were put together. Keep the water fresh during feeding, change the water every 10- 15 days (the change amount is 1/3- 1/2), and feed artificial feed.

4. Can channel catfish be mixed? All ponds that mainly raise four big fish can be mixed. However, it is best to choose a pond with clear water quality, the length of which is 50- 10- 12 cm, and it can be polyculture every 0.07 hectare. After stocking, artificial feed can be put in properly. Generally, the survival rate is 50%-60%, polyculture 10- 12 months, and the average tail weight can reach 0.5-0.7 kg. In polyculture, the stocking amount of carp, crucian carp, tilapia and grass carp should be appropriately reduced to avoid competing with the spotted catfish for food.