I have a worked on fishes for a long time (my first love is the Betta splendens) and now trying to go full time, and I can tell you that there is plenty of fishes with great paterns, colors and lovely behaviors :)
And C.trifasciatus changes is colour to darker values when the night come !
RE: The Melon Butterflyfish and a XVIII Scotish surgeon - 1001fishes project