Yeah, I'm quite keen on ending up with with a nutcase... in spite of the fact that last time I did that, it ended in divorce...!Most people will probably agree you should take the most dominate fish, I just never end up liking that fish’s personality long term. Turns tanks into single specimen deals too quick. I’d sooner clip the tough guy for a bunch of capable fish who can keep a decent stalemate. I usually go the opposite and lose the manic fish for a variety of more even keeled tough guys.