the CBB in that video... if it was MINE... it would be saying FEED ME.
It could be true of the one in the video, too- ESPECIALLY if it's been in captivity for any length of time.
It does appear relaxed and unstressed from what I can see. That's good.
Macropharyngodon, Anampses and Chelmon all hunt the same foods.
Whatever you're feeding that Anampses is worth a shot on the CBB. I don't know who carries Pro Salt in scuse.
edit: I watched that vid again on my PC (larger screen) and when you zoomed in I could see some heavy breathing going on.
I don't like everything I see.