Orange Striped Hermit Crab

Geographical Origin and Habitat: Widely distributed in the tropical Indo-Pacific, from East Africa and the Red Sea to Hawaii and Polynesia. Inhabits shallow coral reefs and rocky reef flats.

Taxonomy: Member of the family Diogenidae. Distinguished by a strongly dorso-ventrally flattened body shape, which is an evolutionary adaptation for living inside narrow, slit-like shells (especially Cone shells, Conus). Grows to 5-6 cm.

Social Behavior: Peaceful, secretive, and primarily nocturnal. spends daylight hours wedged into the tightest crevices of live rock. Harmless to corals and peaceful tankmates.

Coloration and Sexual Dimorphism: Stunning coloration featuring walking legs and claws ringed with alternating, vivid red and bright orange bands. Eye stalks are bright red with dark cornea. No visible sexual dimorphism.

Tank Setup: Suitable for tanks of 15-20 gallons or larger. Provide live rock with narrow crevices for day hiding. Empty flattened shells (especially Conus shells) must be supplied.

Diet and Feeding: Herbivore and detritivore. Feeds on green hair algae, film algae, and leftover fish food. Accepts spirulina wafers, sinking pellets, and chopped frozen foods.

Water Quality: Reef parameters. Salinity SG 1.021-1.025, pH 8.1-8.4, temperature 22-28°C. Highly sensitive to copper treatments and elevated nitrates.

Compatibility and Tankmates: 100% reef-safe. Peaceful clean-up crew member. May occasionally target live cone-shaped snails if empty flat shells are lacking.

Aquarium Breeding: Microscopic zoeal larvae are pelagic and require open ocean salinity to develop, making aquarium breeding unsuccessful under normal conditions.

Risks and Diseases: Low iodine or calcium leading to failed molts. Lack of suitable replacement Conus-type shells causes high stress. Highly sensitive to copper treatments.