Bartletts are about the only species that I have heard of that turn all male in a reef aquarium. They get aggressive towards each other and usually results in death.
Most other species one will turn male.
Sometime you can get a submale with some species like I did with ignitus. There usually is very little aggression with submales.
Sometime you get multiple males with other species too because I believe they are changing already and we just do not see it.
There is always the exception too.
Yeah, that was a risk I was willing to take. Like I said I have multiple males right now, maybe one or two super males, but they look so much better than the females. I haven’t seen much squabbling.