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Rainbow Crab: Content Tips and Photos

Hello dear colleagues and readers! Today I would like to tell you about another animal for aquaterrarium, which is known as the Rainbow Crab.

In nature, it can be found in the coastal regions of the Pacific Ocean. This type of crabs is considered one of the most famous and popular among fans of aquaterrariums.

The back of a crab can range from violet tones to bright blue. The belly of the animal is white and quite often in some individuals you can see a faint bluish or pink tint. Crab legs are brown-orange in color.

Pincers red. On the outside of the claws, the color is much brighter than on the back.

An adult crab under good conditions can be up to 20 centimeters in diameter.

I would like to immediately warn the rash aquaterraumists that rainbow crabs are considered capricious and very demanding animals. But its interesting and exotic color, along with bizarre behavior, reduce all the difficulties and troubles in connection with the disappearance.

Since this type of crabs is a land resident, you should adopt some of the most important aspects when keeping an animal in a home aquaterrarium.

In nature, the crab lives in deep burrows, dug in the sand along the entire length of the coast. The rainbow crabs spend almost all their free time searching for food near their refuge. If the food in its territory could not be found, the crab goes to look for it in the direction of the forest thickets.

This is a significant difference from other crabs that go looking for the ocean. Ocean water is needed for adult crabs only if they have started the mating season. In the rest of the time, the salty ocean waters are not needed by the rainbow crab.

Therefore. if you want to keep this animal, then you will also need a freshwater aquaterrarium, which sometimes has to be salted with water, and in particular, when crabs begin to molt. Unfortunately, this type of crab does not reproduce in artificial conditions, so you will not have to sweat about salt water.

As we know, rainbow crabs are not famous for their peace-loving towards their relatives and other inhabitants of the aquaterrarium. I would like to note an interesting feature in the behavior of the indigo crab – it does not immediately attack its rivals.

He basically likes to provoke his opponents to a duel with the help of his defiant behavior. For a start, he will try to take someone else’s shelter and not let his owner into the hole, or he may not allow the opponent to eat.

If the enemy does not want to fight, then immediately the rainbow crab attacks. This interesting behavior can be observed in both males and females.

One adult will need up to 50 centimeters of free territory. If you plan to buy a couple of individuals, the length of the aquarium should be more than a meter.

When you equip the aquaterrarium of the youngsters, you must take into account the fact that they grow and the prepared reservoir must meet all the requirements put forward by the adult individuals.

The water level in the tank should not exceed 15 centimeters. Since indigo crab is considered land, you will have to organize a large number of islands protruding from the water.

The size of the aquarium substrate fraction must be from 5 millimeters and necessarily stony. The islands can be made of large stones and coasters. If possible, take a mixture of coral chips with zeolite in the aquarium soil.

But since it is not always possible to obtain coral crumb, try a simpler option: mix tuff crumb with granite gravel. Substrate in aquaterrarium should be cleaned regularly with a funnel.

Be sure to maintain cleanliness in the tank and regularly replace water in it. In addition, organize a constant flow of water in the tank with a filter, as well as establish a good aeration. If the level of nitrate and ammonia in the water goes off scale, your crabs may die.

To prevent this, you will have to keep these parameters under control and regularly do water analysis. If you want to lower the level of ammonia and nitrates, then add some 2-5 grams of salt to 1 l of water from the metering.

Similar things also need to be done during the molting of crabs, as they will be in the water at this time.

You can use natural sea salt to add water, but if you don’t have one, try the following eggnog: baking soda that increases pH, calcium chloride (increases hardness, just make sure it does not exceed 20 °) and table salt. It is highly undesirable to lower the water hardness below 10 °, this is especially not recommended during the molting of crabs, because the hardness directly affects the process of adaptation of the animal after molting. The water temperature in the aquaterrarium should be constant and equal to 25-26 degrees.

It is not advisable to play with the temperature, because it can cause death in your pets.

It is very important to plant as many living plants as possible in the aquaterraium with indigo crab, as crabs actively eat green plantings that maintain optimal conditions in the aquaterrarium, and they, in turn, allow animals to live as long as possible. Therefore, I recommend to opt for such aquarium plants, such as: rotape, javanese moss, elodea, Indian fern, wolfia, bladderwort or duckweed.

Consider that the rainbow crab likes to pull grass out of the ground, so it is better to give preference to those plants that will swim in the water column or on the surface.

During the molting period, all crabs are under stress and their organisms are subjected to serious stress. To speed up the adaptation process after molting, a large number of different shelters should be at the disposal of the crab.

During the discharge of the shell, the crabs do not leave their shelters and do not feed. Juveniles shed their shells every ten days, while adults a couple of times a year.

If you want to take proper care of pets, arrange a sufficient number of shelters both outside the water and under the water. In addition, take large stones and build grottoes and crevasses with their help.

When you equip surface shelters, use for this large stones, which must be put in such a way as to create crevasses.

Remember, a large number of various shelters will ensure the safety of your pets during the molt, which will allow them to leave their shelters and go out to eat. In case of detection of danger during feeding, the crab must easily escape to the nearest cleft. Consider one more thing.

All land islands, where your pet likes to rest, should not be heated much, as overheating will provoke premature molting. Therefore, all land areas should be located at some distance from heat sources.

The stones should be barely warm to the touch, but if the stone is hot or well warm, then remove it some distance from the heat source.

To prevent your indigo crabs from eating greenery, bring in plant-based feeds to their diets. You can give your pet oranges, boiled carrots, apples, green peas, bananas, pears, Brussels sprouts, lettuce leaves and dandelion, as well as spinach.

As a rule, the food is laid out on land, where the crab is used to feeding. In no case, the feed should not fall into the water, because it will pollute it.

This may further cause the emergence of various serious diseases or lead to the death of the pet.

Despite the fact that crabs love vegetable food, they are still not enough, so their diet should contain food of plant origin. To the diet of pets was varied, give them a couple of times a week, mussel meat, bloodworms, meal worms, chicken liver or squid meat.

An omelet with red paprika, dry nettle and a tablet of calcium glycerophosphate pounded into powder will be extremely useful.

For the indigo crabs to breed, they need an ocean, as their offspring go through the plankton stage. However, in captivity it is very often possible to observe marriage games and similar behavior. But basically, similar games for reproduction of rainbow crabs in conditions of bondage are not enough

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