Hi JBax, a huma will do good in your tank for a longtime. It may get to big for your tank, huma huma triggerfish get 10 in. and need a minimum tank of 80 gallons, when it does out grow your tank, you will have to sell it, or get a new tank. Huma humas are nice triggerfish, but can become aggressive. Other great triggerfish choices are male blue jaw triggerfish. These triggerfish are beautiful, they are a bit pricey though. Around 50 bucks. The male blue jaw trigger (also female, but males are a lot btter in my opinion) is what I think the nicest trigerfish. I would go with the male blue jaw, they are wonderful. Other good additions would be an eel. Maybe asnowflake, or chainlink. These eels are the one of the less aggressive eels, and are hardy, and don't get big. ANother fish you can get is a dwarf zebra or dwarf fuzzy lionfish. So you can get a huma huma trigger, eel, lion, or male blue jaw trigger, eel, lion. I wouldn't get damsels, chances are when your fish get bigger, they will eat damsels.