In checking your history, and from what I gather you have a new tank that was just set up a month or two ago was setup with dead or dry rock. The Leopard wrasses like to forage on pods all day long and it's a good idea to put them into a well established system. With your system being so new and virtually void of sustainable micro life at this early stage and also given that you have a mandarin in the tank, I would suggest you hold off on this fish for several months. Both the Mandarin and the Leopard should only be kept in a well established system for best survival chances and both are poor choices for such a new system. Your tank is a long ways from being well established. Especially without having been stocked with live rock.