Maximum weight of wild seven-star fish The maximum weight of wild seven-star fish can reach 500 grams or more. Their general weight is about100-250g, and they are relatively large in suitable waters. Seven-star fish has strong adaptability and can survive in the environment of 1-38℃, but the suitable water temperature for growth is 13-30℃.
Before the treatment of Qixing fish culture pond, the water in the pond should be drained first, and then it should be dried in the sun for about 2-3 days. 100- 150kg of quicklime should be mixed with water in the pond before the fry are released 100 days, and finally fresh water with a depth of 50-60 cm should be injected.
The stocking technology of seven-star fish When stocking seven-star fish, it is necessary to choose the fry with a body length of about 5 cm, complete appearance and sufficient vitality, soak them in 3% salt water for 3-5 minutes before stocking, and then stock about 5,000 seven-star fish per mu of pond.
How to feed seven-star fish In the process of seven-star fish culture, if compound feed is used, the daily feeding amount is generally about 3-8% of the fish weight, and the daily feeding amount of meat feed is 5- 10% of the fish weight. The feed formula is fish meal 45%, corn 20%, fish oil 10%, multivitamin 1% and soybean meal 35438+0%.