Butterflyfish ID - Aquarium Hagenbeck Hamburg

Chaetodon smithi?

@Ebirah766 An incredibly rare fish if true. The only other example of this color variation I can find is this photo: Log in to Facebook . It seems to have been taken near Easter Island (anyone speak spanish to translate?) According to this article: Chaetodon smithi photographed in flawless clarity by Ian Skipworth | Reef Builders | The Reef and Saltwater Aquarium Blog it has only been recorded this far east once.

Interesting. Unfortunately, I can't confirm that. Maybe @Sicarius could help?

Yeah, I might have overshot. Probably Chaetodon kleinii?

Yes, just a darker C. kleinii.
Definitely not C. smithi, unfortunately.