Is this guy good or bad?
 

Can someone identify this crab? Originally found it in an acros, which is dead and it hang around in my branching sun coral.

It doesn't look like the acro crab I see from Google. It doesn't show well in the picture, but it has a pair of dark brown (close to black) claws.

Not sure of the name but I have one that looks the same. Strawberry/burgundy color ? Very bad, ate almost anything and would eat fish as it got bigger. Had things dissappearing and I didn't know I had him until I saw him run under a rock one nite, had to take half my tank apart to get him. Now he lives happily in my sump and is getting rather large. I'll see if I have a old pic of him.

Do you have a friend with a Trigger?

Lunch time. Take him out.

Thanks guys. He's out of the display tank right now.