Thinking of adding a new fish....which one????

[steri]

I have a Gift Card that's eating a hole in my wallet. I really want to buy a new fish, just for something new to look at in the tank. Here's the thing, it's gotta be at least mildly aggresive because if it's not, my pain in the butt dottyback will beat its @$$.

So this causes a problem for me, because immediately I starting looking at something like a small Niger Trigger, but I know they are not the most reef safe fish in the world.

Then I started thinking about something like a cowfish (I know the ups and downs of that guy too). My biggest concern with something like a boxfish is whether he would ever be fast enough to get away from a dottyback....but they just look so cool!

Then I started thinking about wrasses. I have a blue sided wrasse, who has no problem out running my dottyback. I may go that route, but I already have a wrasse, so......

Can anyone help me out with ideas (under the $100 area)?

Whatever I got, I plan to get a small one. I'm not too concerned with what they will grow too because my tank is getting upgraded this year at some point.

Any help is much appreciated.

Mostly, I have a soft reef (leathers, xenia, shrooms, kenya tree, ect with some Frogspwn, Hammer, and a Pink Bird's Nest).