Is this a fidler and is it reef safe?

[heckeng]

Little hitchhiker here, he is about the size of a quarter with his legs included. He is one noticibly larger claw than the other. Not furry, pretty smooth and dark brown although the picture looks a little lighter.

 

[York1]

As far as i know fiddler crabs live on the beaches and not actually in the ocean. So i would say it isnt a fiddle but it does look similar

 

[Sk8r]

Big claw, not reef safe or fish safe as a rule, but could live well in a sump.