My sohal tang has been lethargic lately and showing signs of deteriorating health, when hes usually very active. I have had the fish for 15 years, it was also pretty good size when I got it about 6". All the other fish in the tank are fine. Only fish added recently was a broomtail wrasse half his size about a month ago. No signs of aggression from him, and the sohal has always been the most aggressive fish in the tank.
My best guess would be that its dying of old age, but I'm not sure how long they typically live.
My best guess would be that its dying of old age, but I'm not sure how long they typically live.