2. Crayfish cultured in ponds cannot be fed to Pleurotus ostreatus.
3. Fungi and crayfish will have adverse reactions.
Crayfish are omnivores. In terms of eating habits, crayfish prefer to eat mud at the bottom of the river and eat dead small fish or other aquatic organisms. It mainly eats plants, and small fish, shrimp, plankton, benthos and algae can all be used as its food. The content of astaxanthin in the body is positively related to its ability to resist the harsh external environment, that is, the higher the content of astaxanthin in the body, the stronger its ability to resist the harsh external environment. Crayfish can't produce astaxanthin by itself, mainly through food chain-edible microalgae, and accumulate in the body to produce super antioxidant capacity. Astaxanthin can effectively enhance the ability of crayfish to resist harsh environment and improve their reproductive ability. Therefore, astaxanthin is a powerful guarantee for the tenacious vitality of crayfish. Without these microalgae containing astaxanthin, crayfish can hardly survive. This also gives people some misunderstandings: crayfish must live in a dirty environment.