Crab

Rainbow Crab (Cardisoma armatum)
Bright, bold, and full of personality, the Rainbow Crab is a stunning addition for any aquarist looking to spice up their setup. With its vibrant mix of blue, purple, orange, and red hues, this land-dwelling crab is just as colorful in character as it is in appearance.

Native to coastal West Africa, Rainbow Crabs prefer a semi-aquatic setup — think a mix of land and shallow freshwater with plenty of hiding spots. They’re active, curious, and love to dig and explore. While they can be territorial, especially with their own kind, they do well solo or in carefully planned setups.

These crabs grow up to 4–6 inches across and need a secure tank (they’re escape artists!). Feed them a mix of veggies, sinking pellets, and occasional protein like shrimp or fish for a balanced diet.

Perfect for hobbyists who want something colorful and interactive, the Rainbow Crab brings a touch of the wild into your home aquarium.