Threadfins are beautiful!The Anthias will be an amazing addition. I have a group of 5 Threadfin in my Waterbox peninsula. Beautiful fish. Active, out and about.
I came across the male Squareback at my LFS. I asked about the need to feed 3-4x/day (working full time - there is no way I could support that frequency). The owner indicated he fed once or twice per day and the male did just fine on that schedule. I tend to over feed a bit 2x/day and the male has thrived over the past couple of months.
How often do you feed yours?