ID Crab please

[MrJeffrey]

I new that some of my hairy mushroom had bite marks on it and about 1 hour ago I saw this crab next to it. I checked on the web and the only thing I can think of is a gorilla crab....

What do you all think?

http://www.allpetneeds.com/crab.html

Thank you

 

[sabodish]

looks like a rock crab i caught in my old tank about 5 months ago. he ate about 2000 zoanthids and 15 ricordia or so before i caught him.