The mussel crab is the name of an edible crab. It is mainly produced in Fujian and Taiwan in China, and belongs to a species under the genus True Crab of the family True Crab of the order Decapoda, order Softnoseae. The mussel crab presents a greenish-gray or light-green color in appearance, with a hard back, oval body, two slightly developed front feet, and the most distinctive feature of its chelicerae is that they are very well-developed and strong.