fish for 30g cube

[Ruth]

IME Dottybacks are inch for inch the most belligerent fish I have ever owned. I have had 2 royal dotty's, and while they do have character and you have to admire that spunk, they can be just downright mean. I have an SOB yellow tang that likes to think he is boss of the tank but even he will back away from the dotty. Between the SOB and the "short guy on sterioids" additional fish for this tank are not an option.
If you think your clowns are a match and you don't plan on adding more fish down the road then by all means get a dotty. They are beautiful fish if you can put up with their personalities.