Hermit crabs have been popular pets with adults and children for many years, and many appreciate their unique beauty (and just as many don't - it's a matter of taste). With the growing popularity of introducing a piece of the sea into the home, it's no wonder the notion of introducing hermit crabs to a saltwater aquarium has grown in popularity.
Just as there are many types of hermit crabs that can be kept as pets, there are also many different breeds that can be kept in aquariums. However, not all of them have the same chances of survival in captivity, and it is important that the aquarium owner make sure that he knows all the specific needs of his hermit crabs before introducing them to the aquarium. . Below is an overview of some of the most common breeds of aquarium hermit crabs.
- Red hermit crab (Dardanus megistos)- Also known as the white-spotted hermit crab, this crab has red legs with black-edged spots. It is not a safe addition to a reef tank but is very useful for keeping algae growth to a minimum in a community tank. Only one crab per aquarium please; these crabs are very protective of their personal space.
- Red-legged hermit crab (Clibanarius digueti) - these Mexican crabs are a hardy addition to any aquarium, eating the algae in the aquarium. They do, however, require a low level of copper in the water, as their bodies cannot survive in the presence of this metal.
- Scarlet Hermit Crab, or Reef Hermit Crab (Paguristes cadenati) - This hermit crab usually stays small, about two inches in diameter, and has a red body with yellow eye stalks. It is very useful for controlling the growth of algae inside the aquarium. However, if the aquarium does not contain enough algae, it should be supplemented with dried algae.
- Hermit Crab (Pagurus bernhardus) - These crabs are most common in Europe, but are also found in other countries. It is also known as the soldier crab.
As these crabs carry their home on their backs, it is important that they always have new shells available to them when they have outgrown the previous ones. A hermit crab whose shell is the wrong size cannot grow properly.
These shells can be purchased at a pet store or online retailer or, if the owner knows their hermit crab's needs, these shells can often be found on a beach. If the owner chooses to go out into the wild and collect their own shells, it is important that they choose the right type of shell for their hermit crab to live in.
As sea anemones are often an important part of a hermit crab's natural environment, they make excellent tank companions, eating the leftovers when the hermit crab has finished its meal and reducing the amount of aquarium waste.
Hermit crabs are an intriguing addition to any aquarium and require very little maintenance once their owners are familiar with their needs and habits. With the proper care, they can live long and provide hours of joy to their owners and families.