Decorator Crab - Camposcia refusa
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The Decorator Crab (Camposcia refusa), also known as the Spider Decorator Crab, is a fascinating invertebrate known for its unique habit of attaching bits of coral, algae, and sponge to its shell for camouflage. This behavior not only conceals it from predators but also makes it one of the most visually interesting crabs in the hobby.
Description:
Common Names: Decorator Crab, Spider Decorator Crab
Scientific Name: Camposcia refusa
Family: Majidae
Size: Up to 4 inches (10 cm) including legs
Temperament: Peaceful but opportunistic
Difficulty: Moderate
Reef Safe: With caution
Native Region:
Found throughout the Indo-Pacific region, including Indonesia and the Red Sea, where it inhabits coral rubble zones and reef slopes.
Aquarium Setup:
Tank Size: Minimum of 30 gallons
Temperature: 72–78°F (22–26°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate: Live rock with plenty of crevices for hiding and scavenging.
Additional Tips:
• Camouflage Behavior: Attaches pieces of sponge, coral, and algae to its shell for disguise.
• Diet: Omnivorous scavenger; feed small meaty foods such as mysis shrimp, chopped seafood, or sinking pellets.
• Behavior: Nocturnal and reclusive during the day.
• Tankmates: Best with peaceful species; may pick at soft corals or polyps while decorating itself.
