Stone Crab??

[Semo]

I have discovered a stone crab in my tank. I only host a damsel, blenny, standard cleaning crew and soft corals. The stone crab is slightly smaller than the size of a nickel. At what point if any should I try to get it out? Its really hard to catch out in the open at any time. I am just having a hard time finding information about this critter.

 

[skipm]

I say as soon as you can catch him is when you need to remove him. As it grows you fish are in more danger of becoming dinner and as he gets bigger you can end up having more troubles getting it out of holes in your LR.