Red Devil Moon Crab Scientific Name: Cardisoma armatum (often sold as “Red Devil” or “Rainbow Moon Crab”)Age: few months Current Size: 1-3”Max/Adult Size: 4–6 inches (carapace)Source: WildExact Animal Pictured?: no Care • Temperature: 78–85°F• Humidity: 70–85% (high humidity required)• Recommended Enclosure Size: Minimum 20‑gallon long for one; larger for groups• Substrate: Deep, moist substrate for burrowing (eco‑earth/sand mix)• Water: Brackish water dish required (1.005–1.010 SG); land area must dominate• Lighting: Low–moderate UVB recommended Facts • Red Devil Moon Crabs are known for their electric coloration—deep purples, reds, oranges, and bright white claws.• They are semi‑terrestrial, spending most of their time on land but needing access to brackish water for proper health.• Highly territorial, especially adults; provide hides and visual barriers if housing multiples.• Excellent diggers that will create complex burrows, so deep substrate is essential.• Native to West African coastal regions, where they live in mangroves, beaches, and
