suprisingly the tangs have not grown that much, they have been in the tank almost 2 yrs and are fine, I have 3 tangs, 2 clown, 2 cardinal, 1 dottyback, 1 six line wrasse, 1 niger trigger, 1 goby , 1 yellow hogfish, 2 small neon gobies, 1 damsel, all have been in the tank for quite some time. The only one getting bigger where i may have to move is the trigger,