Halloween Hermit Crab

Common name: Halloween Hermit Crab

Scientific name: Ciliopagurus strigatus

Origin: Indo-Pacific

Adult size: up to 7–8 cm (including legs)

Temperament: Semi-aggressive toward other hermits

Reef safe: Yes (with caution)

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Overview

The Halloween Hermit Crab is one of the most striking hermit crab species in the reef hobby, featuring vivid orange legs with dark banding and bright red eyes. A bold and active clean-up crew member, it adds both function and visual impact to marine aquariums.

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Behavior & Compatibility

• Active scavenger and algae grazer

• Can become territorial toward other hermit crabs

• May compete aggressively for shells

• Generally safe with fish and corals

Due to its size and strength, smaller snails or hermits may be at risk if insufficient shells are available.

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Care Requirements

• Minimum tank size: 150 L+ recommended

• Provide multiple empty shells of suitable size

• Stable reef parameters

• Plenty of rockwork and open sand areas

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Feeding

Omnivorous scavenger:

• Detritus and leftover food

• Algae

• Meaty frozen foods

Supplemental feeding reduces the risk of shell aggression.

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Notes

Best suited for medium to large reef aquariums. Provide extra shells and avoid housing with very small clean-up crew members.

A visually impressive and hardy addition for reef aquarists seeking a larger, more characterful hermit crab.