Jay, you hit the nail on the head, I'm expecting an Altum angel, I'm a little worried about being just a specimen, but I'm going to acclimatize and condition it the same way saltwater angelfishes do. Regarding the main tank, I have 3 angels, Bulgarian red chek, Scalare wild and Albino pearlscale, but I am willing to move any specimen if the situation becomes too stressful for the Altum.
Unfortunately, I don't have the space for a bigger tank, I'm preparing a 180G for saltwater for 12 or 18 months from now, but that's the biggest I can get and it will definitely be saltwater. Time will tell if I can get at least 100 or 120 gallons for fresh water, but I find it very difficult.