Crab help!!

[xmjxflipx]

Hey guys.....i just woke up this morning and i saw this gigantic crab....prob around 4 inches wide....this thing is huge...hairy legs etc....all i remember putting in my tanks were green emerald crabs and this red emerald crab......anyways its prob been there for over 6 months now.......

Do you think i should take out all my rocks and try to catch and remove it?
I have noticed no problems with my corals and zoas......but worried that in the future it might become a nuisance.

 

[gilmour01]

more of a risk to small fish i would think. if you dont have anything small, then i'd just keep an eye on it. i personally dont trust crabs, but thats just my opinion.

 

[laskopyre]

If you want to get rid of it, you can get/borrow a fish trap. Bait and wait. No need in taking out all the rock IMO.