Hatching technique of pearl grouper

It is necessary to fertilize water before laying eggs, and then carefully select fish eggs, as well as prepare sufficient insects and good water quality for fish fry to survive and hatch. In the process of hatching, it is necessary to maintain the water quality and water temperature of the pond, prevent and clean up the moss in time, and put in sufficient bait and insects to ensure the adequate nutrition of fish fry. More attention should be paid to the changes in water quality on cloudy and rainy days, and special periods should be avoided when adding water to prevent pond bottom pollution and enteritis.

1. Fertilize and water

Before preparing for hatching, the first thing to prepare is fertilizer and water. You can use "fat-water peptide" and "bacterial polypeptide + tricyclic activity source-fat-water type" to fertilize the water. After that, you can use more products such as "active carbon" to stabilize the water, try not to carry out fertilizer and water, and provide a high-quality place for laying eggs.

2. Releasing eggs

Before laying eggs, detoxify the water in the cage with polyorganic acids. Select high-quality fish eggs and find the right time to release eggs. After laying eggs, in order to make the fish eggs survive and hatch better, "Lisheng duo" can be used to purify the water quality in the cage and remove the odor.

3. To cultivate worms

In order to increase the number of bugs after opening the box, you can use "bait multi-Ⅱ + aquatic bait yeast" to culture worms two days before opening the box. The method of use is a small number of times, which can greatly increase the number of insects. It not only has a good effect of stabilizing water, but also can be used as opening material, and will not pollute the bottom of the pond.

4. Points for attention before and after unpacking

Half an hour before opening the box, sprinkle "Activation + Nutrition Express" in the cages and ponds to have an anti-stress effect. After opening the box, you need to continue to use "Libait multi-Ⅱ + aquatic food attractant yeast" to culture worms, stabilize water, and replenish bait.

5. Control of moss

Moss has a great influence on the water quality of the pond and will hinder the hatching of fish fry, so when the fry is not put into the pond, moss control should be carried out in the pond, and "Dijuan" should be properly used to control the growth of moss in the process of hatching. to provide a high-quality hatching environment for fish fry.

6. Stabilize the water regularly

The stability of water quality directly affects the hatching of fish fry, so in the process of hatching, it is necessary to stabilize the water with "active carbon + Ⅲ" to ensure the water quality.

7. Feed according to quantity

In the process of hatching, it is necessary to ensure the feed intake of fish fry, and feed the fish fry with insects washed with "eupeptides" every day.

8. Water quality management

Rain Water will have an impact on water quality, so we should pay attention to stabilizing water before and after rain. Before the arrival of Rain Water, it is necessary to stabilize the water and resist stress. Pay attention to oxygenation and detoxification. Pay close attention to the situation of fish fry after rain to prevent bubble disease.

The water quality is closely related to the hatching results, so it is necessary to pay close attention to the water quality, stabilize the water regularly, ensure adequate bait and insects, increase the number of insects, promote the hatching of fish fry, and pay attention to the fact that the water is not too fat. If the water is too fat, it will cause the fry to suffer from bubble disease.

9. Prevent high temperature

The development of fish fry will be affected by temperature, if the water level is too low, the temperature in the water will also increase, so it is necessary to deepen the water level appropriately according to the situation, and the deepest water level should not exceed 1.5-2 meters, so as to create a good hatching environment for fish fry.

10. Nutritional supplement

The supply of nutrition will also affect the survival and hatching of fish fry, so in the process of hatching, "activate Ⅱ + Nutrition Express" should be used regularly to provide adequate nutrition for fish fry.

11. Add as little water as possible

After the fry enters the pond, in order to ensure the water quality, if you need to add water after releasing the fry, you should also disinfect the water in advance and then slowly divide it into several times. When adding water, attention should be paid to avoid the peak incidence of fish fry or special periods such as spreading and withdrawing wings.

12. Clean the pond regularly

In the middle and later stages of fish fry hatching, due to the increase of fish fry intake, the amount of worms will be increased, so "Dijuan" should be used regularly to clean the pond to restrain the pollution at the bottom of the pond and prevent the occurrence of fish fry disease caused by hypoxia and changes in water quality.

13. Disease prevention

Regular use of products that can remove harmful bacteria in a timely and effective manner to prevent bacterial reproduction when a large number of worms are thrown, causing fish fry enteritis.