The lone neon I have left is still going strong. He only has a very slight faded spot where the tail meets the tail fin. It's been 3 MONTHS since I first suspected NTD and put him in QT. The second one that came down with it has already died even though he didn't have it as long. If he did not have NTD then he had some type of degenerative (sp?) disease that caused his color to fade and his back end to droop. Could I have been wrong about NTD? I wonder if it's safe to put other fish with him or should I wait a little longer?