Hey all. I have had a Naso Tang in the tank for the past 6 months. He has always eaten like a pig and will eat anything I drop in the tank. I haven't added any new additions (except for a juvenile Blue Ring Angel 3 weeks ago) in the past 3 months. The angel was in the QT and treated before he went into the display. The Naso looks great as do the other fish, but is there a reason he would just stop eating? No disease has ever touched my tank. Is he changing to an adult maybe? Let me know as I am a little worried! Thanks.