I know Chromis sp. are a staple recommendation to beginning aquarists or to aquarists with relatively new tanks but I'm not a huge of them, they aren't nearly as hardy as they're propped up to be. Their recuperative abilities (especially with skin/scale trauma) is pretty poor, the genus of chromis has a much higher death rate in collection, shipping and acclimation than most know. Also unlike other members of the family they do not, in my observations, adapt to the smaller settings, even in non-permanent holding and quarantine. I get that their popularity stems from their their typically small size and lack of aggression when compared to many of the other genus and species in the family Pomacentridae (Damsels/Anemone fish) but they are hard to select as physical trauma isn't always apparent and they rarely recover from it be it from aggression or handling, their thin but sensitive scales being damaged preclude the animals to be more susceptible to infection and disease and further inter-species bullying. In captive set-ups they are also often the first to show stress in response to environmental issues such as dissolved organics, temperature and specific gravity.
I find C. talboti (talbots damsel) to be a good median to the two extremes, both hardiness wise and aggression wise, between the other common damsels in the trade and Chromis.
I also prefer C. talboti aesthetically over the green chromis, but of course that's a completely subjective opinion. Good luck with the new build!
