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Rainbow Crab
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.

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