Hey since this thread has apparently been brought back from the long long ago I wonder if I could voice a question about fiddlers .
Several weeks ago I put a fiddler in a tank with fish and water that's filled to the brim . After it showed repeated and aggressive attempts to escape (one successful) I purchased a tight fitting lid to seal him in . But I see much earlier in this thread that someone insists they be given a dry area in their enclosure . I didn't think much of its attempts to escape since I've seen other critters that are apparently fully aquatic attempt this as well, but now I'm wondering if I'm causing any real and lasting harm to the crab by keeping him submerged .

How pressing of a health issue is this ? If its going to be literally unable to survive this way in the long term I think the only solution is to return him to a store . :|