id this crab plz

[Zoaelite]

As crabs are highly opportunistic I would get him out of there ASAP, you might see small fish and coral disappearing if you don't. As brutal as it sounds sometimes it's worth skewering him with a screwdriver just to kill him fast.

If you do manage to remove him successfully and can't find a home for him (I put all of my evil crabs in my fuge) place him a bag and put him in the freezer, its a quick painless death.