tom obrecht,
Thank you for your inquiry. The Copperband Butterfly fish are difficult to keep because they are sensitive to traveling. Once entered into an aquarium, they should be offered a variety of foods to help get them to start eating. Otherwise, there are no distinguishing marks that differ between the Copperband Butterfly collected from Autralia, Indo-Pacific, or Singapore.
Gwen S.
LiveAquaria
Drs. Foster and Smith