1. container: to cultivate crabs, you need to prepare a container first. You can use a fish tank, preferably with a lid, to prevent crabs from escaping. You can also use pots to prevent crabs from being hurt by too deep water. You can also put some sand in the water. Crabs will be uncomfortable when they are first cultured, but they will be fine in a few days.

2, feeding: feeding crabs is also an important job, crabs can eat more food. The most common are small fish and shrimp, in addition to egg yolk, red nematodes and so on. They can also eat some grass. Every time you feed them, just let them finish eating in half an hour. Don't feed them too much, it will leave too much food in the water and make the water dirty easily.

3. Water quality: it is convenient to breed river crabs. You can take some river water or lake water, or you can use tap water at home directly, but tap water needs to be dried before it can be used. It is more troublesome to breed sea crabs, because they generally can't adapt to the fresh water environment and need to simulate the seawater environment. In the process of feeding, water should also be changed regularly, usually once a week.

4, water temperature: water temperature has a great influence on the appetite of crabs, it is best to keep it appropriate. Generally speaking, the temperature above 15 degrees is more suitable, their appetite is stronger and their growth state will be better.

5, sunbathing: You can let them bask in the sun properly, but not for too long.

6. Cleanliness: In the process of breeding crabs, you should clean their bodies regularly. You can fix their bodies first, and then brush them with tools such as toothbrush, shower gel or soap. Containers can also be properly cleaned to prevent crabs from getting sick.