Crab id please

Kill him, looks like either a gorilla crab or a devil crab.. general rule on crabs, if you didn't put it in there, it probably shouldn't. Ther should be pics on coralpedia?
 
I've fould that injecting fesh water in his crevice will sometimes get him to back out, other wise he gets the chopstick treatment to crush his head, or the blowtorch treatment if he's trying to be a funny guy. I do have a teddybear in my sps tank, he doesn't bother them at all lol
 
good rule of thumb is that if its fuzzy its harmful (in the case of reefs) most fuzzy crabs, like emeralds, have a tendency to do a grate job at cleaning, but nip at corals.
 
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