1. The life span of wild freshwater crayfish male shrimp is generally 20 months, and the life span of female shrimp is 24 months. The specific survival time of domestic crayfish is related to the breeding technology. If it is cultured properly, it can generally live for 2 years. -3 years, but will usually die soon if not properly bred.

2. If saltwater lobsters avoid natural predators, they can generally reach about 20 years old; lobsters in the deep sea can usually live to be about 100 years old.