I don't think so. I hope I'm wrong for your sake, but I bet you when he gets 5-6 inches, it will chase down and kill another fish almost twice his size. A full sized FH does not share tank space with anything (except that person's 18"+ Arowana). If it's a female, you might have better odds, but a male is almost out of the question, especially with other large, male cichlids. The big difference between the FH and other cichlids is that FH's kill other fish, and they don't have to fit in their mouths. They don't need to be hungry to kill either.
The last thing to consider is that they really look great. Why try making them live with something that is going to have to lock lips with them, bit back and get torn up. Is it worth possibly causing your FH to look like the dude of MASK for the rest of his fish life?