Crabs are generally amphibians, so the water level should not be too high when raised. Some stones or tiles should be put in the water to give crabs a place to swim. If possible, you can plant some aquatic plants or water-resistant plants in the water. The most important thing is to prevent crabs from escaping, so the fish tank should have a certain height.
You can keep it in a pot. It doesn't matter whether the water is shallow or not, nor will it drown. But fortunately, the water just soaked the crab shell. You can let it bask in the sun, but not for too long.
Crabs are omnivores. You can feed them fish, and they can accept raw and dried fish. They can also be fed fish feed such as red worms, shrimps, snails and mussels. It's best to feed some grass food often. As long as it's okay, don't worry about the rest, so crabs can be raised easily.
When crabs want to change their shells, they will start a hunger strike, the color will be darker, and cracks will begin to appear in their stomachs. At this time, their bodies are very fragile, and if they are not properly protected, they will be attacked by other similar people.
Although rainbow crabs have hard shells, they will fight with each other. Therefore, in order to avoid "broken hands and feet", the owner may wish to put some decorations in the cylinder as props for self-protection. (beg for points, hope to adopt)