2. Environment. If there is a filtering system, it can be arranged to simulate the natural environment, with roots, bamboo tubes, etc. placed for them to climb, and plants such as Eichhornia crassipes and Haematococcus verticillata planted for them to avoid, inhabit and feed, with a water depth of 0.5 meters. If there is no filtration system, it is recommended to raise them in bare tanks and put a small amount of plants. The water depth should be 3-5 cm. When the water quality becomes worse, change the water in time.
3. quantity. Too high stocking density of crayfish can easily lead to hypoxia, fighting and disability, etc. Therefore, adult crayfish raised at home can have at most one per square decimeter, and too many males can easily lead to fighting, so the ratio of male to female is 3:1the best.
4. Feeding. Crayfish is omnivorous. It likes to eat not only animal bait such as fresh miscellaneous fish, but also plant bait such as soybean, bean cake, corn, fruit and fresh aquatic plants. Family rearing can feed fish, snail, shrimp, watermelon and steamed bread. Under the condition of ensuring the quality, the daily feeding amount should generally be based on satiety, eating and leaving no residual bait. The water temperature in July-10/October is suitable, which is the growing season of shrimp, and it is fed twice a day, 1 time each morning and evening. Feed 1 time every day in other seasons. Because crayfish mainly eat at night, the feeding amount at night accounts for 70%-80% of the whole day's bait. When the weather is fine, cast more, and when it is hot and muggy, continuous rainy days or the water quality is too strong, cast less; A large number of shrimps throw less when molting, and throw more after molting.