Tonight when i got home from work i decided to take out the flashlight and checkout my tank to see if there was anything new crawling around. Didn't c anything too spectacular just the normal little critters running around on the rocks, not quite sure what they all are, but i'm sure you all know what i'm talking about if you look at your tanks at night. There is all kinds of life out and about. The one thing that did startle me was two decent sized crabs. Identical to emerald crabs in shape and size, but with dark brown almost black shells and white fuzzy legs. Any ideas what they are or if they could be a danger to any of my corals or other inhabitants. It looked to me that they were picking food off the lr
just like emeralds do so maybe they won't hurt anything. Just wondering if anybody else has these.