Pepper crabs are not suitable for living in fresh water. If raised in fresh water, they are easy to die.

Chili crab, whose scientific name is Tan's mud crab, lives in muddy land where seawater meets fresh water. Pepper crabs will die underwater for a long time because of lack of oxygen or unstable water quality. At the same time, they live in the primitive state, and the water quality has a certain degree of salt. However, fresh water tanks are generally used at home, so it is difficult to survive for a long time.