Well I'll say it again ^_^ both are boy's
And yes the other's are right, both male and females have beards and both will flare as well so that's never a good indicator. Also ovipositer's are not indicators as well, some people think that only females have them. Ovipositer also known as egg spots which are little white dots behind the ventral fins on the body. But males also have imitator ovipositer to try to fool other fish in the wild. Some will get rid of them by the time they hit maturity but some males will actually keep it and I actually have a boy who's approx. a year old and still has his
So last thing that is the only way to tell is to look for the ovaries which as I had said were a cone shaped object behind the stomach. So I actually took your picture and outlined the stomach which is circular although poorly drawn circle lol
And then I've outlined where the ovaries would
be if it were a female which it is not ^_^
Also note how long the fins are already, the female would have a much shorter anal fin and the ventrals would also be very short as well.