How can I distinguish a male zebra danio from a female one?

Question

I know that females are supposed to be fatter and less brightly coloured but the zebra danio that I suspect is female is the most brightly coloured out of the three I have (I'm getting more later).

She is clearly the fattest too. The other two are much slimmer, but also duller!

Which of them are female?

Answer 1

Gender : Males have yellow in between the black stripes and female zebra danios are sometimes larger.

CC

Answer 2

The one with the v****a...duh!

Answer 3

generally i find that there colours are the same brightness

yes females are bigger