It's my experience HSB and trout are explosive on pellets. Neither will crowd the other away from pellets. CC are just like vacuum cleaners once they get used to feeding on pellets. They swimming around at the surface just sucking them down. I don't see CC or HSB crowding each other out and I don't think trout will either. If you have absolutely giant CC, they may cause issues but I would say CC 10+ pounds, under that you should be OK.