cool emerald. I have two of them in my 30 gallon reef tank. I've not had any problem with them. the larger one likes to come to the front of the tank, crosses his claws and sits there watching us watch him... lol
well here is mine, I got it on a piece of Live Rock I got from LFS.
oh I would like to mention this is my First ever Macro pic...
sorry not the best pic, but I am learing...