Yellow Legged Hermit Crab

Quick facts

Handling caution: Can pinch with claws if handled carelessly

Identity

Also known as

Yellow Tip Hermit Crab; Dwarf Yellow Tip Hermit Crab; White Leg Hermit Crab

Synonyms

Clibanarius virescens

Environment

Saltwater

Native to

Indo-Pacific

Habitat

Intertidal rocky shores, tide pools, and shallow reef flats where it grazes algae-covered rock and sand

Sourcing

Wild-caught

Conservation

Not Evaluated

Care

Care level

Easy

Temperament

Peaceful

Adult size

0.5 – 1 in (1.3 – 2.5 cm)

Lifespan

1 – 2 yrs

Min tank

10 gal (38 L)

Growth rate

Slow

Placement

Bottom

Water

Temperature

72 – 78 °F (22 – 26 °C)

pH

8.1 – 8.4

dKH

8 – 12 dKH

Salinity

1.023 – 1.025 SG

Flow

Low-Moderate

Behavior & compatibility

Social

Group

Aggression to own kind

Moderate

Active

Night

Reef safe

Yes

Invert safe

With caution

Shrimp safe

With caution

Clean-up role

Algae, Biofilm, Detritus, Leftover food

Population boom risk

Low

Feeding & breeding

Diet

Omnivore

Foods

Algae, Biofilm, Pellets, Wafers, Frozen

Breeding type

Broadcast spawner

Breeding difficulty

Not bred in captivity

Sexing

Not externally distinguishable without close examination; not typically sexed in the hobby

Target feeding

Beneficial

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Care guide

Overview

Reef cleanup crews benefit from this small scavenger, whose banded yellow legs and blue-green body forage steadily across live rock and sand. It suits established reef tanks with plenty of algae film and rubble to pick through, needing extra empty shells on hand and stable calcium and alkalinity to molt without complication. Peaceful toward fish and corals, it competes with other hermits over housing.

Care

This small scavenging hermit crab does best in an established reef tank with plenty of live rock to graze on and a mixed sand and rubble substrate to forage through. Stable calcium, magnesium, and alkalinity levels support smooth molting, and a handful of extra empty shells in various sizes should always be on hand so the crab can upgrade without stealing a shell from a snail. It tolerates a wide range of reef conditions but, like most crustaceans, will not survive exposure to copper-based medications.

Feeding

Most of its diet comes from grazing film algae, hair algae, cyanobacteria, and detritus directly off rock and glass surfaces, along with scavenged leftover fish food. In very clean, well-established systems where algae growth is limited, supplement with sinking algae wafers, pellets, or occasional frozen meaty foods to keep it well fed. It readily accepts dried seaweed clipped to the glass if natural grazing sources run low.

Tank mates

Generally peaceful toward fish and corals, making it a reliable reef cleanup crew member, though it will compete with other hermits and snails over shells if extras are not kept on hand. It can occasionally prey on slow or weakened snails when shells are scarce, so shrimp and snail compatibility should be considered with caution. Avoid keeping it with predatory fish such as puffers, triggers, hawkfish, or wrasses that will readily eat small crustaceans.

Breeding

Females carry fertilized eggs beneath the abdomen until they hatch into planktonic larvae released into open water. These larvae pass through several zoeal and megalopa stages that require specific plankton feeds and controlled currents to survive, conditions almost impossible to replicate in a home aquarium. As a result, hermit crabs are essentially never bred in captivity and all trade specimens are wild-collected.

Health

Molting is the main health event to watch for; the crab will bury in the sand or hide for a period of days while its exoskeleton hardens and should not be disturbed during this time. Stable calcium, magnesium, and alkalinity reduce molt failures and shell damage. Sudden salinity or pH swings during acclimation, along with any copper exposure, are the most common causes of stress or death in this species.

Sources

1. Yellow-tipped Hermit Crab Aquarium Care | Atlarium
2. Yellow Legged Hermit Crab | Clibanarius virescens – Reefamorous
3. Dwarf Yellow Tip Hermit Crab – LiveAquaria
4. Clibanarius tricolor Species | Tropical Fish Hobbyist Magazine

Varieties in the catalog

ECC White Leg Hermit Crabs

More Hermit crabs

Dwarf Red Tip Hermit CrabECC Blue Leg Hermit CrabsElectric Blue Hermit CrabGarmard's Hermit CrabHalloween Hermit CrabScarlet Reef Hermit Crabs