What else should I add to my tank?

[Ruth]

IMO/IME the Yellow Tang is probably the least prone to Ich. I know that these are a common fish but again IMO they are a great reef fish. They are vibrantly coloured, are not usually shy (mine will eat out of my hand) and that flash of yellow in your display is so nice. The only drawback is they can be quite agressive so probably best to be one of the last fish you add. Naso Tangs get huge! The one I have is probably at least 10inches without his streamer tail fins. They are a great fish but IMO it will get too big for you tank. Mine is also a picky eater - the only things he will accept is Nori (only on a clip or magnet) and the evil grape calerpa that I have growing in one of my Nano tanks and that is IT - no flake, pellet, or frozen meaty foods. In my 190g I have this Tang, a large Moorish Idol, a medium Maroon Clown and 2 firefish and I think I am just about at my limit for fish although I may add a school of anthias - not sure yet.