Purple crab

[Celine]

I have a purple colour hitchhiker crab in the live rock. I have tried to google it w/ out luck. It is completely purple like caroline algae colour. Unfortunately, it hides between the rock I can't take any pictures.

Anyone has any idea what is it?

Thanks

 

[melosu58]

Basically hard to tell without a picture. There are so many types. The mithrax crabs come in many colors and that would be my guess but as I said it`s far out there without a pic.

 

[Celine]

I know. It just hardly comes out. I never see the whole crab entirely, always part of it hiding in the rock.

 

[Crabs]

Even if u can only get a pic of its claw, that would help. Most of the unfriendly reef crabs have a pincer that has black tips