I seem to be able to make out what appears to be his anal fin, or dorsal if this guy was swimming backwards but I can make it out. Man I hope you can observe him more often, one of my favorite angels but very cryptic; I would love to have it but the cost for a fish that is surely having a hard time in the lfs and also possibly not arriving alive after shipping is not a good investment for me, it recently became available here for what seems to be around $350 USD, but in order to pull the trigger I need a little more confidence. Incredible fish without a doubt, which in fact has a lot in common with Centropyge nox, which belongs to the aurantia complex. I haven't seen one live for over 18 years, and by the way the cost was around $20 back then, times have changed...I "saw" the golden angelfish a few minutes ago. I only put saw in quotations because he stays in the shadows so much he may as well be a nox angelfish, as far as actually being able to make out any details go. I even tried grabbing a photo when he swam up to a corner by the overflow but I doubt you can even make out he's in center of the picture.