It will be the first and only angel in the tank, The new tank is not running yet. I had a Flagfin live for about 5 years in one of my older tanks until a power outage and I was away for vacation. Anyways the QT tank is a 65. The new tank is a 125, not stocked with anything yet. just live rock and a few zoas and shrooms that were on the rocks. The LFS is very good, I have 2 very good ones to choose from out of about 10. My last Flagfin was in a FOWLR tank that had softies and there were no problems. I wanna add SPS to the new tank and some of my LPS from my other tank.