The Chinese name is Okinawa Mingxi Crab, which belongs to the phylum Arthropoda, class Mollusca, order Decapoda, family Crabs, and genus Mingxi Crab in the animal kingdom. It is a marine organism. The Okinawan Mingxi crab is an endemic species of Okinawa Island. The Mingxi crab genus is found in Taiwan and the Central Ryukyu Islands, with only 4 species, including 3 species in Okinawa Prefecture and 1 species in Taiwan. The Mingxi crab, distributed on the main island of Okinawa, is famous for its ferocity. Many frogs and even other marsh crabs are prey of the Mingxi crab in Okinawa. In addition, the Okinawan Mingxi crab is the same as the Ze crab genus, and its life cycle does not require returning to the sea to lay eggs. It adopts a strategy of protecting a small number of large eggs by the mother crab.