Common name: hairy red hermit crab

General information

The Hairy Red Hermit Crab, Dardanus lagopodes, is a striking species known for its vibrant red color and the distinctive 'hairy' setae covering its legs and claws. These setae are not just for show; they play a role in the crab's interaction with its environment, helping to trap detritus for camouflage. This species is a nocturnal scavenger, often seen actively foraging at night in the wild.

Care

In the aquarium, Dardanus lagopodes requires a tank with plenty of live rock and a sandy substrate to mimic its natural habitat. It is important to provide a variety of shell sizes for the crab to move into as it grows. This hermit crab is generally peaceful but may become aggressive towards other hermit crabs if there is a shortage of suitable shells. A varied diet that includes meaty foods and vegetable matter will keep them healthy and active.

Reproduction

Reproduction in hermit crabs typically involves the male depositing sperm in the female, who then carries the fertilized eggs until they hatch into planktonic larvae. These larvae go through several stages before settling to the bottom and finding a shell to inhabit. Breeding Dardanus lagopodes in captivity is challenging and not commonly done by hobbyists.

Symbiosis

While not as commonly involved in symbiotic relationships as some other invertebrates, hermit crabs like Dardanus lagopodes may engage in commensal relationships with anemones. In the wild, some hermit crabs carry sea anemones on their shells, which provide protection to the crab with their stinging cells, while benefiting from food scraps and increased mobility.

Habitat

The Hairy Red Hermit Crab is found in the Indo-Pacific region, from the Red Sea to the Western Pacific. It prefers reef environments with plenty of crevices and hiding spots. In the wild, it is often found at depths where light is still available for the algae and other organisms that form part of its diet.