I agree with Mike on this, but doubt that they will ever get along. There's a reason that all of the books say not to try it.
Originally Posted by ezy33
If dividing the tank doesn't work, You could try netting the bully. In essence you become the alpha fish. Any time the bully starts to be aggressive you chase him with a net. Or remove the bully for a few days and rearrange the tank. Good luck!
Stressing out the dominant fish won't help in the least and may very well exacerbate the situation.