Crab ID

[Eb0la11]

Hey guys, this is pretty fun for me haha. My first ID thread!

Ok so I got my live rock today. Picked up two chunks from Gold's and one from Pisces just to seed my other rock.

Anyways, got a hitch hiker along the way so far. A brown crab, hes very small, maybe his head or body or whatever (not including legs) is Id say a bit smaller than a dime.

He is hairy or spiky a bit and seems to be grazing on algae without a care in the world right now lol. Any thoughts? I can try to get a pic of him later, but I think hes prob relatively common.