Will domestic Basha fish have more market than Vietnamese Basha fish?

Domestic Basha fish will have more market.

Basha fish is an important freshwater aquaculture species in Southeast Asia, and it is also a high-quality economic fish unique to Mekong River basin. During the growth of fish, three pieces of oil accumulated in abdominal cavity, accounting for about 58% of the body weight.

Basha fish are gregarious, often living in upper water and omnivorous. Under natural conditions, they eat small fish, shrimps, snails, duckweeds and aquatic plants on the surface, and they can eat artificial compound feed under artificial breeding environment. The intestine of Basha fish is shorter, which is 1.2 ~ 1.4 times of the total length. Basha fish is resistant to hypoxia and has low requirements for aquaculture water quality.

Culture technology of Basha fish

grow seedlings

Stocking 4-5cm fry, stocking density is 30,000-50,000 fish per mu, feed consumption is 5%, and the specification will reach 50-100g by the end of10; From the end of 10 to the end of March of the following year, build a plastic greenhouse for wintering, with the stocking density of 20,000-30,000 heads/mu and the feed feeding amount of1.5-2%, and keep the water temperature above 20℃ during wintering.

Adult fish culture

Location of the pond: The pond is located at the annual minimum water temperature 10℃, close to the flowing water source. Sufficient water, good water quality, slightly alkaline, convenient irrigation and drainage, no noise and pollution to the surrounding environment. Fine sand or muddy soil with good water permeability is suitable for the soil at the bottom of the pond. The area is 3- 10 mu and the water depth is 2-5 meters. According to the size of the pond, there are water inlet pipes and drainage pipes at both ends, and the water inlet pipes and drainage pipes must be separated.

Disinfection of pond: half a month before stocking fish, according to the standard of water depth per mu 10 ~ 20cm, the whole pond is sprinkled with quicklime 100 ~ 150kg, and poured to 60 ~ 80cm； after 7 days; Before stocking fish, apply 0.5-1.0 kg water quality regulator per mu, and gradually add water to more than 2 meters.

Fish species throwing: choose Basha fish species with strong physique, neat specifications, lively swimming and no disease or injury to throw. It is required that the body length of Basha fish is more than 3.0 cm, and 5000 ~ 8000 fish are put in each mu. Soak the seedlings in 3% salt solution for 3 ~ 5 minutes or in 10 ~ 20mg/L potassium permanganate solution 10 ~ 15 minutes. The release of fish species in the Pearl River Delta should be completed before July each year.

Breeding management

Feeding management: fish are fed 24 hours after entering the pond, and full-price compound feed is fed. The crude protein in feed should be above 28%, and the daily feeding amount should be 3% ~ 10% of the total fish. Feed it 2-3 times a day, the feeding amount in the morning is 30-50% of the total feeding amount in a day, and the feeding amount in the afternoon is 50-70% of the total feeding amount in a day. The feed with a weight of 3-20g is powder, and the feeding amount is 7-10% of the total amount of fish; When the weight is more than 20g, feed granular feed, the feed granularity of 20-100g is1.0mm, and the feeding amount is 6-9% of the total fish; 100-250g feed particle size is 2.0mm, and the feeding amount is 4-7% of the total fish; The feed particle size of 250g or more is 3.0mm or more, and the feeding amount is 3-6% of the total fish. During the feeding process, 1 sampling inspection shall be carried out every 10 to 15 days, and the feeding amount, feeding time and feeding mode shall be adjusted according to the weather, feeding and growth of Basha fish.

Water quality control: regularly test the water quality of the pond, with the requirements of pH7 ~ 9, transparency 30 ~ 50cm, dissolved oxygen above 4 mg/L, nitrite below 0.02 mg/L and ammonia nitrogen below 0.6 mg/L. In case of extreme weather such as typhoon and thunderstorm, the pond water should be deepened reasonably to keep the water temperature stable. During the feeding process, change the water 1 time every 15 to 20 days, and the water change amount is 15% to 30% of the whole pool, and the water change temperature difference is less than 3℃.

Disease prevention and control: during the breeding period, we should adhere to daily inspections to truly find, prevent and treat diseases as soon as possible. During the culture period, according to the water depth per mu 1 m, 800 to 1000g of chlorine-containing lime is disinfected every10 to 15 days, and after disinfection for 3 days, the whole pond is sprayed with compound probiotics; In hot season, 3-4 grams of highly stable vitamin C and vitamin E are mixed in each kilogram of feed.