I've had a blood parrot cichlid named Sissypants for 8 years. About 5 years I got another BP named Igor. They are now a mated pair (although not fertile). However Igor is a dick. He grew huge and ugly and is a complete bully in my tank. He bullies the other BP and my giant Polyepterus, Jormangunder. I've considered rehoming him but I'm unsure how that would affect his mate, Pants. Thoughts?