Look at any of the butterflies in the "tinkeri-complex". These are all butterflies hailing from deeper waters and are very hardy as far as butterflies go. I have kept several of them and they are extremely personable fish.
Here are the species in this genus:
Chaetodon burgess:
Chaetodon tinkeri:
Chaetodon declivis:
Chaetodon mitratus:
Chaetodon flavocoronatus:
Chaetodon tinkeri x Chaetodon burgessi:
All of these fish have very similar body shape. They are typically found in very deep water along the reef slope. All of the specimens that I have kept have eaten almost immediately and adapted very quickly to tank life.
These are considered to be some of the best butterflies for the reef tank. Like all butterflyfish they do pose some risk to large polyp stony corals, but if kept well fed, they generally do not do much harm. All the specimens that I have kept have never touched any corals.
~Michael