The Spotted Reef Crab (Carpilius maculatus) is a large nocturnal crustacean known for its creamy shell marked with eleven distinct red spots, commonly found in coral and rocky reefs of the Indo-Pacific.
Scientific Name
Carpilius maculatus
Habitat
Coral and rocky reef environments across the Indo-West Pacific region.
Conservation
Not currently listed as endangered; however, localized population stress may occur due to habitat loss.
Lifespan
Not precisely documented, but like many reef crabs, can live several years in natural conditions.
Fun Fact
It is also called the "Seven-eleven crab" due to the arrangement of its eleven red spots resembling the 7-11 logo.
Diet
Predatory; primarily feeds on marine snails.
Average Size
Carapace width can exceed 10 cm (4 inches).
Location / Placement info
Displayed in the Coastal Reef Exhibit, near the Ocean-View Tunnel
FAQ
What is the lifespan of the Spotted Reef Crab?
Spotted Reef Crabs can live up to 5–8 years in captivity with stable conditions and proper care.
What do Spotted Reef Crabs eat?
They are omnivorous scavengers, feeding on algae, detritus, leftover food, and small invertebrates.
Are Spotted Reef Crabs aggressive?
They are semi-aggressive and may attack smaller or slower tank mates, especially at night.
What is the ideal tank size for Spotted Reef Crabs?
A minimum of 30–40 gallons is recommended with ample hiding spaces and stable water parameters.
Do Spotted Reef Crabs need a reef environment to survive?
While not required, they thrive in reef-like tanks with live rock and sandy substrate.
How big do Spotted Reef Crabs grow?
They can grow up to 6 inches (15 cm) across the carapace.
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