Yours does look female to me, but there are many variables in sexual appearance.
If there is another dominant male around, a sub dominant male might might mimic female colors, or if there are 2 females, one might display a nuchal hump as dominance..
But yes yours appears female to me.
Dark bands, torpedo shape, solid dorsal color.
i am not sure of their full potential, but I got mine from the fry of a couple of w.c. ones that "madness" had. I would guesstimate that his male was closing in on 6 inches and female about 5 inches.... when they had their fry