I had three two died shorty after I bought them. The one I have I have had for almost two years. He eats great the other two did not which is probably what did them in. They can be tricky, if you decide to buy him make sure he is eating eargerly and not just picking. They do better in groups like 3 or 6. If yours has spots on the fins and a long dorsal fin it is a male so two or three females would be good if you have the room. If you get him by himself he may turn back to a female. Mine was mid change and now has pretty much returned to a female with the other two gone.