Tangs, angelfish, foxface, butterflies! All these fish have bright colors, get fairly large, and have a somewhat round body shape. My question is, what fish in this general description fits my tank? The tank is 36" x 20" x 22", so basically a 40 gallon breeder but taller and a bit wider. I've got a relatively open aquascape and a fair bit of flow, if that makes a difference. Tank has some soft corals and I'm planning on adding more, so I don't think a dwarf angelfish is a great idea, much as I'd love to put in a flame angel. People typically recommend wrasses to add color and display in a smaller tank, but I'm looking for a flat, somewhat round fish (laterally compressed) around 3 - 5 inches in length. Does such a thing exist? I've thought about a foxface, yellow tang, or Genicanthus angelfish before. I decided the foxface would make it look like a 5 gallon, the angel would need more than my current once a day feeding, and the tang, while the most manageable of those three, probably isn't a wise addition for a multitude of reasons. I also thought about a copperband, but given my relative inexperience, decided that wasn't wise either. Any ideas?