Rough Rubble Crab

Rough Rubble Crab, ID Not Sure

Rough Rubble Crab, ID Not Sure

ID Not Sure: The identification is a best guess but lacks enough confidence or supporting evidence.

Name: Rough Rubble Crab
Scientific Name: Pseudomedaeus agassizi
Family: Mud Crabs
Taxonomic: Xanthidae
ID Group: Crabs
Size: up to 1.25 in.
Depth Range: In shallow waters (0 – 15 ft.)
Sightings: Not usually seen

The Rough Rubble Crab has a rough-looking shell with a narrow V-shaped notch at the front edge of the carapace. The walking legs have white bands, and the front claw arms have noticeable raised ridges.

This small crab lives among loose coral pieces and rubble, where it blends well with the surrounding bottom. It usually stays hidden in small spaces between rocks and broken coral.