Purchase an aquarium tank of at least 5 gallons to accommodate your crabs. [substeps] Find a tank that will fit with the number of purple thais you have.
[header] How to take care of a purple thai devil crab [title] Get an aquarium tank. [step] Purple thai devil crabs live near rivers in the wild. To keep your crabs happy and healthy, keep their tank as close to the natural habitat as possible.