As a new species, how should Australian silver bass be cultured?

First, its economic value: fast growth, no cannibalism, high reproduction rate, high feed and meat exchange coefficient, wide adaptability, strong disease resistance, omnivorous, etc. ; Beautiful appearance, tender meat, fat but not greasy, no muscle spurs, elastic muscles and rich nutrition; The coverage rate of fish is over 52%, the body is full of colloid and nutrition, the meat is tender and full, and the taste is extremely sweet, mellow and rich, which makes people memorable. Fish glue is beneficial to anti-aging and enhancing immunity, and it is the best tonic after parturient operation. Its flavor is good, it is resistant to frozen storage, and its meat is refreshing without thorns. It is a healthy food suitable for all ages. Suitable for sashimi, barbecue, steaming and so on. Its plump figure, rich in collagen, evenly distributed marble lines, white fish, no spines, delicious and juicy, is a treasure in fresh fish.

Second, biological characteristics Australian silver bass is the mildest local cultured fish species in Australia. It is omnivorous, feeding on shrimp, insects, plankton and algae in rivers, with more food sources than carnivorous fish. Meibao fish in the South China Sea lives in a wide range of water temperature, belonging to wide-temperature fish, which is cold-resistant and heat-resistant; Its survival water temperature is 2 ~ 36℃, and the optimum growth water temperature is 65438 08 ~ 28℃, so it can be raised in pure fresh water or brackish water. Like to live in clear water, too fertile water will affect their appetite for food. Water transparency 1.5 ~ 40 cm, pH value 6 ~ 8.5.

Three, adult fish culture 1. Pond requirements: the pond should be divided into zones, with an area of 667 square meters to 3000 square meters and a water depth of 1.5 meters to 2.5 meters. The bottom of the pond should be flat, with sufficient water, good water quality, convenient water inlet and outlet, and equipped with aerators. Drain the pond water 15 days before stocking, remove excess silt and weeds, and spray 100 kg of quicklime every 667 square meters to disinfect the whole pond.

2.？ Adult fish culture: Australian silver bass fry is more than 5 cm long. After successful bait training, it can be put into adult fish pond for culture. The fry should be physically strong, without injury or disease, and with neat specifications.

3. Stocking density: water depth 1.5m, with about 9,000 animals per mu; The water depth is 1.5m ~ 2.5m, and about 13000 fish are released.

4.？ Feed feeding:

(1) Australian silver perch is an omnivorous fish, which mainly feeds on mollusks, aquatic insects and algae, and is generally replaced by artificial feed, among which floating tilapia and perch feed are the most common. It is required that the crude protein content of body weight 10g ~ 10g is about 42% in the fry stage and 30 ~ 28% in the adult stage. Perch or other puffed granular feed with similar crude protein content can be selected, and the daily feeding amount is 3% ~ 5% of the fish weight.

(2) Feed it 2 ~ 3 times a day, and strictly follow the "four-fixed" principle of timing, positioning, qualitative and quantitative. But it should be adjusted reasonably according to the weather, water temperature, water quality and fish feeding.

5. Daily management: Before stocking, clean the pond with quicklime or bleaching powder, thoroughly remove miscellaneous fish and kill pathogens. After the fry enter the pond, fresh water is replenished every 10 day, and the depth of each injection is 1 0cm ~15cm. In the hot season, the water in the pond will be deepened to the highest level, and the water will be changed once a week. Second, change the depth of the pool water by 20 cm to 30 cm at a time to maintain the quality of fresh water. Patrol the pond in the morning and evening to observe the feeding, activity, growth and water quality changes of fish.