Originally Posted by Tissien
You're both wrong, I'm sure I have girls ;) They're both have ovipositor and they are in one tank with male. I don't think so that 3 boys can be in one tank from almost half year and never fighting together :) But I admit this, their ovipositor is very hard to find, sometimes I have problem with this and I starting wonder did my girls start change their sex :P
Their flaring always finished like in the movie, they never fighting and running before Aimaru (male) :)
I would still keep an eye on them. There have been males that have been known to have something that looks like an ovipositor.
I had a girl that everyone swore was a veiltail boy, but it turned out she was just a spadetail with beautiful, long fins.
What I found helpful was making a list of features that could indicate sex. Things like head shape, fin length, ventrals, ovipositor, behavior, etc.
it can be harder to determine sex than people make it seem.
But for OP's question, yes girls can and do flare.