I've had one for years. Green with a hot pink mouth. Give it a hole where it can dig in between some rubble on the bottom up against the rocks where there is full light and where current will sweap into it and it will stay put. Mine has been in the same hole for a couple years. Their sting is quite potent and they are not a clown hoster. I've seen them up high on rocks too and they really seem to stay put pretty well. The downside would be if they are not given their spot and wander to find it, they could do some damage to sps.