Jason use to keep schools in his tanks because they eat pests. Like I said I have never had a problem with aggression and I keep a very peaceful tank.

Justin, I'm also considering replacing my chromis with these guys. Maybe I'll keep one chromis just for the different blue....but then again...my chromis school of 4 live in my purple valida colony and it is so sweet to see them chilling in SPS...granted they are killing it from the base....probably because I don't have enough flow to keep their waste from sitting on it.,,,hmmm might have to direct some flow at it....just kind of thought of it as I was typing this. LOL.