Crab Id Needed

[tmack]

Brought this one home from the lfs on a piece of LR with shrooms I bought. I've gotten black ones before but never one that looked like this?

Any idea what kind it is? Good or bad actor? (I know some folks think all crabs are bad).

Thanks

 

[matt295]

i think it is an emerald mithrax crab.

 

[tmack]

Thanks. Better an emerald than the black ones I get that I have to dispose of (no fuge). Do emeralds pose any risk as bad actors? Most people avoid crabs, but they are cool critters.

 

[tmack]

He's in the tank now, for better or for worse.