Common Moon Crab

Matuta victor

The common moon crab, Matuta victor, is a medium-sized coastal crab found primarily in the warm beaches of the Indo-Pacific region, extending from Southeast Asia to Fiji and New Hebrides. It has also been introduced to the Mediterranean Sea. This species is easily recognizable by its rounded carapace adorned with two long, well-developed lateral spines. The carapace is marked with a yellowish ground color, featuring numerous fine black spots and several larger ones. Its legs and chelae are bright yellow, which helps distinguish it from other crabs. These crabs inhabit sandy areas and intertidal mudflats, typically at depths ranging from 0 to 20 meters. They are benthic creatures, often seen swimming along with the tidal current or burrowing in the sand. As carnivorous and facultative scavengers, common moon crabs primarily feed on crustaceans and mollusks. Smaller individuals tend to prey on small, soft-shelled species, while larger ones target slow-moving invertebrates like anomurans, bivalves, and gastropods. Divers encountering the common moon crab may observe its rapid swimming abilities, facilitated by its flattened legs adapted for such movement. The species is harmless to humans and is often caught by local communities for subsistence fisheries. Currently, the conservation status of Matuta victor has not been evaluated by the IUCN.