Blue-Legged Hermit Crab (Clibanarius tricolor)

The Blue-Legged Hermit Crab is a small, strikingly colored reef invertebrate, easily recognized by its vibrant blue legs contrasted against a dark, banded body. Highly active and diligent, it is a popular choice for reef aquariums due to its natural algae-grazing behavior and scavenging habits. These hermit crabs add both movement and utility to the aquarium, helping to maintain a clean and balanced environment.

Size: Typically grows up to 1 inch in length

Country of Origin: Western Atlantic Ocean, including the Caribbean Sea and Florida Keys

Latin Name: Clibanarius tricolor

Care Level: Easy – thrives in established aquariums with stable water parameters and plenty of empty shells for shelter

Blue-Legged Hermit Crabs are omnivores that feed on algae, detritus, and small leftover foods. They are reef safe, coexisting peacefully with corals, fish, and other invertebrates, making them an excellent addition to community and reef aquariums. Their bright coloration and active scavenging behavior make them both a functional and visually appealing part of the cleanup crew.