If you can find a healthy one and have lots of live food for them to scavenge throughout the day they can be pretty good. They will exhaust your tank of pods pretty quickly unless you have a large system. Some will accept prepared foods but others will not. They are known to come in with internal parasites so even if they look healthy proper quarantine with a treatment with medicated foods for internal parasites should be done as a precaution. Or you risk spreading it to your other fish and having the leopard wrasse waste away slowly no matter what it eats. I have had them and they can be shy at first. Mine liked a deep substrate bed on the bottom and they like to jump so a screen lid is almost a must. Or any aggression will make them jump right out of the water onto the floor. If your tank is smaller I would look at other wrasse as these wrasse are best in large tanks where they can roam and constantly look for food. I think Eric has one now.