Ideas on a tank mate?

[Branco]

A flowerhorn big enough or red devil is good

 

[JML1997]

A flowerhorn big enough or red devil is good

No, then the Jag, and your suggested fish will just begin to fight for dominance in the tank..

I'd recommend as stated above an armored catfish, maybe a Spotted Raphael, and some Silver Dollars, or a large group of Giant Danio's.

 

[Chitala Ornata Mama]

A flowerhorn big enough or red devil is good

No, I don't want more chaos in there, I want less. He would go rounds with a devil or a flowerhorn until one or both were dead.
He's my buddy and I love him, so I think I'm going to either put in a divider, or go with the idea of adding a lot of rock work and putting several catfish in with him.
Thanks for all the advice.