While feeding my tank today I noticed some small hairy legs sticking out of a hole in my LR and stealing food from a ricordia polyp. From the size of the legs the creature appears to be smaller than a dime. All I can see is the legs from time to time. I am assuming that it is some type of crab. I can not think of anything else that it can be. The rock would be easy to remove. Would you pull the rock and try to get the creature out and identify it? Also if I pull the rock out how can I get the creature to come out of the hole without harming the ricordia polyps on the rock? Thanks!