Ok, So I have two Flowerhorns, a Faded Red Texas, and a Zzfemale. They are in with a couple other hybrids but mostly viejas and and such. The male since they are a pair will fend off spots, but he picks and chooses whom he lets live in the tank. For example he let a black belt in the tank, no problems, smaller fish, no problem. I have a FH larger, he wont let him breathe. Today, he killed a hartwegi that was in there a month no problems. Maybe moving him to a tank alone,let others gain authority, then palce him back after a month?