Cardisoma armatum are more commonly known as Rainbow Crabs, Patriot Crabs, Tricolor Crabs, Moon Crabs or Soapdish Crabs. Rainbow Crabs are a popular group of semi-terrestrial crabs. They are hardy and easy to care for, making them a great choice for beginner aquarists. Rainbow Crabs are land crabs that originate from the West Coast of Africa. They can be found along the coastal regions in the river deltas and other brackish areas, building homes near sources of fresh or seawater. Their homes are burrows of sand that grow deeper and more complex as they age. Though in nature they can…