Hitchhiker Crab ID Please

[kdfrosty]

I caught this guy grabbing and demolishing a newly acclimated (i.e. >4 hours) Flame Angel.
Any ideas?

 

[renogaw]

no clue, but darn look at those claws.

 

[saltn00b]

looks like a type of stone crab!

 

[kdfrosty]

Ya ya....he's mean and not reef safe. I know this.
Can anyone possibly provide an ID?

 

[saltn00b]

there are thousands upon thousands of crab species, plus many of those that have not yet been identified. it is almost impossible to ID anything less common.
here is a florida stone crab in my tank that grew from .5" -> 4" in 3 months and ate shrimp, fish, crabs and i needed to tear out 80% of the rockwork to get him.