I bought a camal shrimp about a year ago, and the damn pet store told me it was reefsafe, so I put it in and found out later that it wasnt reefsafe, BUT its been in my tank ever since and hasnt bothered anything, and I have shrooms, zooz, polyps, lps, yellow leather, colt coral, toadstool, and some more, so I guess it was luck of the draw.