
Shrimp, Snails, and Crabs
Rainbow Crab
Cardisoma armatum
Photo: Maciek Stanikowski ( the base photo ), and Arlo from JoeMonster · Public domain · Wikimedia Commons
Key facts
- Temperature24–28 °C
- pH7–8
- Adult size20 cm
- Difficulty★★★☆☆
- TemperamentAggressive
Full profile
- Family
- Gecarcinidae
- Origin
- West African coast
- Size
- 15 – 20 cm
- Temperature
- 24 – 28°C
- pH
- 7.0 – 8.0
- Salinity
- 1.003 – 1.010 (water for drinking and bathing)
- Difficulty
- ★★★☆☆
- Water type
- brackish
- Behavior
- Aggressive (toward fish and other crabs)
- Diet
- Omnivore (fruit, vegetables, fish)
- Reproduction
- larvae in the ocean; does not reproduce in captivity
Notes: A land crab with blue, red, and orange coloring. It needs a large aquaterrarium with moist soil for burrowing.





