Red-ridged Clinging Crab - Mithraculus forceps

The Red-ridged Clinging Crab (Mithraculus forceps, formerly Mithrax forceps) is very similar to the popular Emerald Crab (Mithraculus sculptus, formerly Mithrax sculptus). They have a lumpy carapace, furry legs, and claws flattened at the tips to harvest food. Most commonly they are found in a light or dark reddish-brown coloration.

These crabs are rock dwellers. They may not be seen often in a rocky tank as they can easily hide in small crevices in the rock. In cooperation with hermit crabs and snails and good maintenance habits, they will also help keep down the amount of hair algae that can grow in the aquarium.