I got in from work thursday about 1 am took a quick look at the tank and saw something didn't look right upon closer observation I saw I have an urchin in the reef tank. I haven't added rock in at least a year that I can remember and we moved the tank about 5 monthes ago and didn't see it then I can't tell its doing any damage but live aquaria says it's not reef safe I think its a pencil urchin anybody kept one in a reef or should I get it out if I ever see it again