Well, I do not want this fish if it will make rock unstable and cover corals with sand. They are very cool though. Josh, I have a mesh cover by KathyC, no fish can get through that!
the sand bed must be 3 inches deep, the live rock must be on the bottom of the tank and not on the sand bed, and the tank top must be completely covered. They will get out through the smallest crack or opening! trust me, i lose a couple of jaw fish that way!