My males are constantly doing a dance trying to show who's the alpha, but when it comes to the ladies they hunt in groups! I have a few that are obvious runts, but there's a lot of them that think they're the boss. I can't speak to Endlers, even though I suspect my last batch of mutts has a couple of boys with endler genes.
Trying to keep an all male tank was tough because they did nip at each others fins from time to time.