Really? This I so hit or miss. My single azure had been a model citizen

Ime, Yellowtails are the least aggressive. I have several in clients' tanks, but no more than two. I had a breeding pair in my old 90-gallon tank for a couple years or so until I dismantled it. I definitely find that even the most peaceful Damsel does best with some boisterous fish to keep them in line.

Mine was too for almost a year. Then, I guess he matured or something, and wasn't so nice any more.

You guys are making me loose hope ok this plan! I have seen multiple pajama cardinals in a tank.. Are they any more peaceful to their own over damsels?

Have you looked at green chromis? I'm planning to add 4 to my tank and then another group when I upgrade to the 180g.

Years ago, you could get these for 3 for $5 at JL. I would buy 12, and they would whittle away to 2 or 3 within 6 months. Repeat. I did this for years. They more often than not "vanish".

I have 12 blue chromis, and 8 blue stripe damsel in my tank for roughly 5 months now. Chromis have been in there for just under a year

No damsels, but we have a large shoal of Mithraculus sculptus.

I've kept Blue-Eye Cardinals in tanks as small as 50-gallons for a couple years or more. They get along pretty well, and shoal better than any of the other options ime.