The Freshwater Pom Pom Crab can be found in various tropical and sub-tropical regions across the globe, including Africa, Asia, and Australia, with populations noted in Madagascar, Taiwan, and New Caledonia. This crab is capable of thriving in both brackish and fully freshwater environments. It is believed that the crab reproduces in brackish water, with its fry undergoing a larval stage similar to other amphidromous crustaceans that live in freshwater as adults but spawn in brackish areas. While there are no reports of successful aquarium spawning, it is a possibility. Unlike most so-called “freshwater” crabs, the Freshwater Pom Pom Crab is fully aquatic. Nevertheless, we recommend keeping the water line relatively low or adding a lid to the aquarium to prevent these crabs from escaping, as they have been known to do so occasionally.