I currently have 4 Pakistani (chaetodon collare) and 2 Klein's (chaetodon Kleinii) in one of my tanks. The Klein's were introduced yesterday and ate 10 minutes later.
Today they all even ate flake. :shock: I've had the Paki's for a few months and could never get them to eat flake until today. They would eat mysis, prawns etc. but never flake. The Paki's school which is real cool. Every one of these fish came from J&L and ate from the first day I brought them home and will eat from my hands. Very peaceful fish and worth keeping IMO. J&L has a few different types in their store and have them all eating but I agree that there are many kinds that will never survive in captivity. I found wetwebmedia.com to be a good source for making choices.
Jeff