1. Create a good environment; plant aquatic plants such as paddy rice, water lettuce, and water peanuts in the pond, and put some stones and bricks at the bottom of the pool to simulate the natural ecological environment to facilitate spawning by the nymphs.
2. The stocking density should be appropriate; individuals should be moderate to the nymphs, and it is best to choose 100g~150g jaundice for spawning and pro-family breeding. The proportion of males and females is 1:2-4, and the stocking density is about 10 per square meter.
3. Adjust the water quality level; the breeding pond water must be non-toxic river water, lake water, do not use groundwater, and the pH should be between 6.5 to 7.8, the water depth is 20cm to 30cm, and the new cement pool should be dealkalized.
4. Feeding the feed should be reasonable; from April to September, the breeding season of A. erinaceus should be fed with artificial diets with higher protein content, and some animal feeds such as fish paste and earthworms should be added. Sexual mating nymphs, after being fed with high-protein diets, usually spawn for 5 days to 7 days. The eggs are laid on the side of grass or stones. As long as there is a white foam, the ovary is produced by the nymphs.
5. Strengthen the parent's prenatal training; increase the protein content of the parent feed in the fall, feed a small amount in the winter, feed in the spring, and increase the protein content of the feed to promote the development of jaundice to restore constitution and gonadal development, lay the foundation for reproduction.