+1 on Beani!
Although I think flowerhorns are aggressive enough, if you want something Hyper aggressive then just get a Beani and enjoy him all by himself in a big tank. They have amazing colors and personality, and you dont have to worry about any breeding, just got to be careful about them getting bloat.
Beani would be my top choice...if not then I would get an Umbee![]()
I agree with you completely, I am noticing the subject is "trying to get extremely aggressive hybrid"
You are absolutely spot on with a pure species a Beani or Umbee is truly a Highlight solo Fish.
Does the OP want a pure species or a hybrid, That is the question!!!! Btw i like your flowerhorn as your avatar.