1. container: crabs can be raised in fish tanks or basins. It's better to have a cover, and the water should not be too deep.

2. Feeding: You can give crabs, eat small fish shrimp egg yolks and other foods, and don't feed too much each time.

3. Water quality: Freshwater crabs should be kept in fresh water, and sea crabs should be kept in seawater. It is best to change the water once a week.

4. Water temperature: keep it above 15 degrees.

5, sunbathing: you can let them sunbathe, but not for a long time.