I hate the ugly faces on the males too - but, if I had one that turned out to be male, well, he can't help it...
I have a large pink - When young, they are great as community fish, but at any time, will eat any fish that will fit into their very large mouth. They will be the boss of the tank, no matter what.
Then, at about 6-7 inches, they start killing everything, IF, and only IF, yours is "an aggressive one." Some remain mellow.
There is no way to really predict this.