Is this thing safe for my reef..Just found it last night. It is mostly black with some blue tint. The white stripe on the back opens up more when it is not hit with light. When shining a light it totally closes up. I checked the internet and could not find this guy.
really neat find, great hitchhiker as mentioned above. would be neat to see if they start breeding, if so toss some in the fuge so they really take off