I have been quarantining a group of 4 lyretail anthias and 2 azure damsels. They went through 2 weeks of copper and metro treatment along with 2 doses of prazi in one quarantine tank and then were moved to a sterile tank and had been there for 4 days. I checked on them this morning with the intention of moving them to my display today and found 2 dead (one damsel and one anthias) I had not seen any signs of disease at all.. Everything seemed fine with them. The only thing i can think of is they were possibly getting bullied although I had not seen much signs of that and until today they were all out swimming about and acting normal. But when I found them both their fins were pretty tore up.. I don't know if they were being picked on after they died or if they were bullied that bad in the last day and that is what killed them (I didn't notice torn fins on any of them yesterday morning) Could fish die that quick due to bullying if not showing any signs of stress? Other thoughts? Would you be worried about moving the rest of these to display now?