Semi-aquatic crabs will need a tank that has a half-land, half-water setup—similar to a turtle or
frog aquarium. They must have access to both land and water at their disposal. They will usually
feed under water but may feed on land also.
True aquatic crabs can be distinguished by modified back legs.
The last set of legs is usually flat to aid in swimming. There are
very few aquatic crabs that can be mixed with other animals.
They are downright mean! They can and will take down a fish
twice their size and eat it up.
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The care of these crabs is minimal. They do not require expensive technology or a ton of money to
keep the healthy and alive. Some do not even require filters, only bi-monthly water changes. No
matter what types of crabs you are interested in, they are always a real neat different type of pet.
Kids really seem to like them and they are very responsive to their owners. They will see you enter
the room and already be throwing their claws up or begging for food.
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Freshwater Inverts.com
Crabs are more of a specialty item. They have unique requirements that are not shared by too many
other common aquarium tank mates. For a wealth of info on crabs, click here to visit Wikipedia Free
Encyclopedia.
A lot of crabs require brackish water in their enclosure. This sounds fancy, but is really no
more difficult than adding aquarium salt to your water. Brackish crabs will survive in
fresh water for months sometimes. You will, however, notice the animals slowing down over time. I
believe that they are dying of a deficiency of some kind due to the lack of salt.
There are true freshwater crabs available. They are hard to come by but we are doing our best to get
them into the hobby. There are some from Peru and other Amazonian countries. There are also true
freshwater crabs found in the great rift lakes of Africa.
Land crabs like hermit crabs and some others need a
terrarium-type setup. They will need a small dish of water in
the tank but the rest must be land. Decorations can include sand
or gravel, rocks, bog wood,
etc. Some plants may be eaten.
related to hermit crabs but are true freshwater animals. There
are some 250 different "variants" from the Amazon basin.
This is a huge group that we should see more and more of as
time goes on. Aegla platensis is the only species that I have in
my possession at this time. We again will be working with the
collectors to try to introduce as many new species to the
hobby as we can.
Aegla are in a class all their
own. They are most closely