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Rainbow Crab - Learn How to Take Care of Cardisoma Armatum

The rainbow crab is one of the most popular creatures picked for domestic breeding. But how does it look in practice? The tank for the rainbow crab is the most crucial issue, as it must meet certain conditions. Learn how to feed the crustacean and how to take care of it every day. If you're looking for such information - you've come to the right place.

Rainbow Crab - Learn How to Take Care of Cardisoma Armatum

The rainbow crab - what kind of animal is it?

The rainbow crab is also known as the patriot crab, or Cardisoma Armatum in the scientific world. This crustacean has stolen the hearts of aquarists. The name “rainbow” is a result of its characteristic colorful shell. What does the rainbow crab look like? It doesn’t differ from other crustaceans of this type. The main part, known as a cephalothorax is oval. The crab has four pairs of legs thanks to which it can move around, and claws.

Where does the rainbow crab originate?

Cardisoma Armatum lives in South America. The species can also be found along African coasts. When did it gain the name rainbow crab? The crustacean has been officially named in 1851, when it was first discovered.

Where does the rainbow crab originate?

What does the rainbow crab look like?

The rainbow crab can grow up to 15 centimeters in its natural habitat, but some specimens outgrow the standard. What about Cardisoma Armatum kept at home? A crab living in an aquarium rarely reaches 15 centimeters. The typical size of a rainbow crab is 10 centimeters.

The rainbow crab amazes with its colors. It’s purple-brown, but the color has a tint of violet, navy blue and light blue - hence the name of the crustacean. The legs have a characteristic red shade, and are covered with black hair.

This species of crab has characteristic claws. The animal has two pairs - one bigger than the other. Their color is the same as the upper part of the shell.

Are rainbow crabs dangerous?

If you decide to purchase a rainbow land crab, there’s no need to be afraid. It is, of course, a predator, but it’s harmless to humans. Sometimes, it might pinch your hand with its claws, but it’s completely safe.

The rainbow crab - how to take care of it?

Many people wonder whether it’s difficult to take care of a rainbow crab? Keeping a Cardisoma Armatum at home is relatively easy. Just like other crustaceans, the rainbow crab requires certain conditions. The right water temperature is key, so the animal can molt. A tank of the right size and proper feeding are also important.

The rainbow crab - how to take care of it?

The rainbow crab - tank and accessories

The aquarium for the rainbow crab is the crucial element of keeping this animal. The tank has to be divided into two zones:

  • land zone,
  • water zone.

Gravel, sand and large stones make a perfect substrate for the crab - that’s where it’s going to spend its time. Consider adding some spots where the animal can hide - half of a coconut or some roots are perfect for this purpose. You can always use special already prepared crab tanks, or use accessories and equip the aquarium on your own.

Remember that rainbow crabs are territorial. It means it’s better to keep just one crustacean. Otherwise, the crabs might start fighting.

What do rainbow crabs eat?

The rainbow crab is easy to feed. It’s not a picky eater. You can feed it with:

  • lean meat,
  • frozen bloodworm larvae,
  • eggshells,
  • fruits and vegetables.

You can also use special mixes purchased at a pet store. The time when the crustacean is the most active - in the evening - is the best moment for feeding.

What do rainbow crabs eat?

Are rainbow crabs prone to any diseases?

Unfortunately, little is known about diseases of rainbow crabs. But it’s worth stressing that you should feed the crab with fresh and healthy food, without any additives. The food is not the only potential source of disease for crabs. The aquarium must always be clean, which means you need a system of filters. Also, make sure to take care of the substrate placed in the tank.

The rainbow crab - lifespan

The rainbow crab can live a maximum age of 6 years - a longer lifespan is unlikely. These crustaceans thrive far better in wilderness. In this case, they live up to 10 years.

How to breed rainbow crabs?

Reproduction of rainbow crabs is relatively simple. A male inseminates the eggs. The female puts them in her abdomen. After some time, tiny crabs hatch in her body. The process heavily depends on the temperature in the aquarium. The higher the temperature, the quicker it happens. Crabs are independent after hatching.

The rainbow crab for sale - how much does it cost?

The rainbow crab is not the most expensive crustacean. It typically costs about $5. You might encounter more expensive offers as well - some breeders offer rainbow crabs for $15 and more.

Where can I buy a rainbow crab?

Rainbow crabs can be purchased in most pet stores. You can also search for offers from private breeders who have plenty of crabs for sale.

Where can I buy a rainbow crab?

📍 What do rainbow crabs eat?

Feeding a rainbow crab is easy. Its menu should include lean meat, pluck, eggshells, worms and bananas. The crab can also eat apples, lettuce and a store-bought crab food. Remember to always clean the aquarium and remove any unfinished food scraps.

📍 How long does the rainbow crab live?

The rainbow crab is a popular crustacean kept in aquariums. If the animal is provided with the right conditions and a tank of the appropriate size, it can live up to 6 years. Note that the animal lives longer in wilderness - usually around 10 years.

📍 How often should you feed a rainbow crab?

Cardisoma armatum, also known as the rainbow crab is a popular crustacean kept in aquariums. One should remember to feed the animal regularly. Do it in the evening, as the crab is the most active then.

📍 What kind of water for a rainbow crab?

Water is essential for the rainbow crab, and any other crustacean. Rainbow crabs live in freshwater or brackish. The tank should be heated, so the water remains at 20-30°C (68-86°F). If the temperature drops below 18°C (64.4°F), the crab might not survive. The pH of the water is also important - it should be between 6 and 8.