Not all damsels are crated equally - in fact, many fish identified as 'damsels' aren't actually damsels. Why anyone would keep Dascyllus genus in their tanks is beyond me - they are devil spawn and there are countless threads stating this. Chrysiptera genus, on the other hand, are mostly benign. You just have to be smart about it.Another reefer here, @ca1ore had 60+ damsels in his 450 mixed reef. Nothing major to report. A mix of Azures and another I forget which. More often than not damsels in the genus of Chrysiptera are what we are after for both coral and aggression safety.
As noted, I kept over 60 in my prior 450 - azures, rolland, YT and talbot without any major issues. They just need their own micro territories.
My guess is that the damsel in the video is after algae on the tiles rather than the zoa.
