Gecarcinidaeinvertebratesintermediate

Rainbow Crab

Cardisoma armatum

Also known as: Rainbow Crab, Patriot Crab, Nigerian Giant Crab

Origin: West Africa

R

Water Parameters

Temperature2428 °C
15 °C35 °C
pH7.58.5
49
GH (Hardness)820 °dGH
0 °dGH30 °dGH
KH (Alkalinity)415 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
15 cm
Min Tank
100 L
Lifespan
5-10
Swimming Level
bottom
Schooling
No
Diet
omnivore
Temperament
territorial, bold, predominantly terrestrial

About

Cardisoma armatum is a large, vividly coloured land crab from West Africa featuring a striking combination of deep blue carapace, orange-red legs, and white claws. It is primarily terrestrial and requires a large paludarium with a deep, diggable substrate and access to water. It is active and intelligent, though bold and territorial.

Care Guide

Water: 24–28°C, pH 7.5–8.5; requires a large water pool for soaking and humidity maintenance. Tank: Minimum 100L paludarium with very deep substrate (15cm+) for burrowing and a secure, heavy lid. Feeding: Fruit, vegetables, dried fish, meaty protein, and calcium supplements. Behaviour: Territorial and bold; will dig extensive burrows; can be aggressive toward other crabs. Compatibility: Best kept alone or as a mated pair; not suitable for community setups.

Buy Rainbow Crab from FinsHQ shops

Shops currently listing this species with stock available

No shops are currently listing Rainbow Crab. List your shop on FinsHQ.
Built for aquarium retailers

Sell Rainbow Crab in your shop?

Join aquarium shops already using FinsHQ. Get a beautiful webshop, mobile app, and inventory management — built for aquatic retailers.

Start your free store