Blue-eyed Hermit Crab
Clibanarius corallinus
A small Indo-Pacific marine hermit crab, easily identified by its vivid red legs and bright blue eyes. It is an excellent and peaceful algae eater.
Temperatura da água
22 - 28 °C
Valor de pH
8.1 - 8.4
Tipo de água
Marinho
Tipo invertebrado
Hermit crab
Tamanho adulto
3 cm
Grupo mínimo
>= 1
KH
8 - 12 dKH
Papel ecológico
Symbiont
Sensibilidade ao cobre
High
Descrição da espécie
Geographical Origin and Habitat: Clibanarius corallinus is widely distributed across the tropical Indo-Pacific, from East Africa to Polynesia, including southern Japan and northern Australia. It inhabits shallow coral reefs, rocky intertidal zones, and sunlit tide pools, where it crawls over substrate looking for food.
Taxonomy: Belongs to the family Diogenidae and the genus Clibanarius. It requires empty gastropod shells to protect its soft, curled abdomen. The species name 'corallinus' refers to the intense coral-red coloration of its appendages. Adults reach a maximum size of approximately 3-4 centimeters.
Social Behavior: It is a peaceful, active, and social invertebrate. In the wild, they are found in large groups, and they exhibit similar gregarious behavior in aquariums. It does not threaten fish or corals, spending its time grazing on microalgae over rocks and sand.
Coloration and Sexual Dimorphism: Easily recognized by its uniform brick-red or coral-red walking legs and claws, which contrast beautifully with its striking bright blue or turquoise eyes on long stalks. No external sexual dimorphism is present; sexing requires specialized laboratory examination.
Cuidado, criação e companheiros de tanque
Tank Setup: Suitable for reef tanks and nano-reefs starting from 40 liters. Provide plenty of live rock for grazing and a sandy substrate. Keep an assortment of empty gastropod shells of various sizes on the sand bed to prevent shell fights and support the crab's growth.
Diet and Feeding: An excellent herbivore and detritivore. It actively grazes on green hair algae, diatoms, cyanobacteria, and organic detritus. It also consumes leftover fish flakes, frozen foods, and sinking pellets. It helps keep the aquarium clean and reduces nuisance algae.
Water Quality: Requires stable marine conditions: temperature 22°C to 26°C, pH between 8.1 and 8.4, specific gravity between 1.023 and 1.025, and KH of 8 to 12 dKH. Regular water changes are helpful to replenish essential trace minerals and keep nutrient levels low.
Compatibility and Tankmates: Completely reef-safe. Coexists peacefully with small reef fish, corals, and other peaceful invertebrates. To protect beneficial snails, ensure there is an abundance of empty shells available. Do not house with puffers, triggerfish, or large wrasses.
Aquarium Breeding: Breeding in home aquariums is not documented. Fertilized eggs are carried by the female under her abdomen until hatching. The hatched zoea larvae are planktonic and require specialized rearing tanks and microscopic live food to survive.
Risks and Diseases: Highly sensitive to copper-based treatments and sudden changes in water density. Proper levels of iodine, calcium, and magnesium are critical to ensure successful molting. When molting, the crab will hide in the rockwork; do not disturb or handle it.
Origem e distribuição geográfica
Clibanarius corallinus is widely distributed across the tropical Indo-Pacific, from East Africa to Polynesia, including southern Japan and northern Australia. It inhabits shallow coral reefs, rocky intertidal zones, and sunlit tide pools, where it crawls over substrate looking for food.
Origem
Oceanos tropicais e recifesÁfrica e MadagascarLeste AsiáticoAustrália, Nova Guiné e Oceania
Perfil de invertebrados
- Dieta
- Omnivore
- These crabs are invaluable omnivorous scavengers that spend their time grazing on various types of nuisance algae, including hair algae and cyanobacteria. They will also greedily consume detritus, uneaten fish food, and decaying organic matter. If natural food sources run low in the aquarium, their diet should be supplemented with dried seaweed and sinking pellets.
- Papel ecológico
- Symbiont
- They are quintessential members of the reef clean-up crew, performing essential janitorial duties across the rockwork and substrate. By continuously grazing on algae and processing detritus, they prevent organic buildup and assist in maintaining overall water quality. Their foraging activities also subtly sift the top layers of sand, preventing stagnation.
- Tamanho adulto
- 3 cm
- Risco de salto
- Yes
- These heavy, shell-dwelling bottom feeders are completely incapable of jumping or swimming out of the water. Their anatomy and weight confine them strictly to the substrate and rockwork. While they can climb up powerhead cords or silicone seams to the water surface, they pose absolutely zero risk of leaping from the tank.
- Sensibilidade ao choque
- High
- Hermit crabs are comparatively hardy, but they still require careful acclimation to new water chemistry and temperature. Drastic shifts in salinity are particularly dangerous and can interfere with their osmoregulation. A slow drip acclimation is the recommended standard practice to ensure long-term survival.
- Cálcio e minerais
- Medium
- Proper calcium, magnesium, and trace element levels are mandatory to facilitate a healthy molting process and allow their new exoskeleton to harden. Regular water changes with a high-quality reef salt mix usually provide sufficient elements for their needs. Without adequate calcium, their new shell remains soft, making them highly susceptible to predation.
- Muda
- Shell growth
- When it is time to molt, the crab may temporarily leave its shell and hide within the live rock until its new exoskeleton is sufficiently hard. The shed exoskeleton strongly resembles a dead crab and is often mistaken as such by inexperienced aquarists. Ensure spare empty shells of various sizes are always available so they can upgrade safely post-molt.
- Reprodução
- Oviparous
- Reproduction in the home aquarium is an extremely rare occurrence and generally unsuccessful. They release microscopic, free-swimming larvae into the water column, which are usually swiftly consumed by corals and fish. Successfully raising these larvae requires dedicated pelagic feeding regimens and isolated rearing systems.
- Compatibilidade e companheiros de tanque
- Reef safe
- They are exceptionally peaceful toward fish and corals, making them an ideal and safe addition to any reef aquarium clean-up crew. However, they may occasionally squabble with other hermit crabs over desirable empty shells if resources are scarce. They generally ignore snails, provided there are enough empty shells to prevent them from killing snails for their homes.
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