Anyone Know How To Sex Rasboras?

[stoneagedinosaur]

Other than waiting to see which ones lay eggs.
They are getting pretty frisky and some are mirroring each others movements or chasing each other. Would be nice to know

Ta

 

[KittyKat]

If you look at a healthy adult school, the females will be fuller in the belly and the males (who are leaner and more slender) will be showing off to the females and each other.

 

[Harlequins]

The females are deeper and fuller in the body than the males and the females also tend to be a copper colour once they reach breeding conditions.
Also the black region on males are slightely more extended and more rounded at the bottom,Females have a straight edge to the black portion.
Hope this helps

I have looked at my tons of times,but they don't keep still long enough