What is rainbow crab?

Rainbow crabs, also known as Cardisoma armatum, are brightly colored crustaceans that are native to the west coast of Africa. They are popular pets in the aquarium trade due to their stunning colors and unique appearance.

These crabs can grow up to 4 inches in size and have a shell that ranges in color from shades of red, orange, yellow, and purple. They have large, powerful claws that they use to catch prey and defend themselves from predators.

Rainbow crabs are omnivorous and will eat a variety of foods including plants, algae, insects, and small fish. They require a large aquarium with plenty of hiding places and areas to climb. They are also known to be territorial and may become aggressive towards other tank mates, so it is best to keep them in a species-only tank.

Overall, rainbow crabs are fascinating creatures that require specific care and attention to thrive in a home aquarium. With the proper environment and diet, they can live for several years and provide hours of entertainment for their owners.