I agree with
@Slocke post above. But I add that once acclimated, Leopards eats everything and I have no problem with feeding Leopards (Meleagris, Black, Ornate, and Star). They eats larger pods than Mandarin. Most of the food Mandarin eat are small tiny pods, and most of the Mandarin are obligates pod eater, they are too slow to compete with other fish in the tank for the food that we feed the tank, even if some of them will eat sinking pellets.
Since Leopard tend to dive for the sand when they are startle and frightened, you can get away with not having a cover tank, if there are no fish bothering them. Leopards were the only wrasse I keep for several years. I did not have a cover on my tank at that time and did not loose them jumping.
If you have a fine sand bed, and have plenty of live fauna, you can add Leopard first and they will most likely do well. Initially they will come out and only feed on the fauna, then once acclimated they will be out more and feed on the food you feed the tank. The reason why they are consider delicate and difficult, is the fact that many people acclimated them to tank like in sterile tank with no fauna. In this situation, we have to feed them when they come out of the sand. Usually when they come out we are not there to feed them, or our feeding activity and movement scare them and cause them to dive back into the sand. This result in a weaken wrasse, and died of starvation or succumb to disease.
Because to the above reason, acclimate Leopard require a refugium type setting. In this setting, acclimate Leopard is not difficult.
