Red claw crab

[RobbieM]

Ive had mine now for around 2 months and when I see him / she, it looks fine and healthy, apart from a missing leg that somone told me would regrow.
I keep reading about ppl saying that a crab needs an area above the water to visit, is this really nessaserry? The shop I brought it from had them under water and mine hasnt been out of the water for the 2 months ive had it. I cant see any practical way of letting it get out of the water either.

 

[utahfish]

i have two red clawed crabs in a ten gallon tank by themdelves. filled 3/4 of the way and has a piece of wood poking out of the water. one crab hangs out on top of the wood all the time while the other one rarely leaves the water. As long as your crab isnt always trying to get out or climbing your filter intake he's probaly happy being in the water all the time.