Flame angel-male?female?

[ClownNut]

i added 2 flame angel to my tank. both went in at the same time.
so far they didnt fight, thx god they didnt. and they did swim togather sometime. i just wondering how can i know do i have 1 male1female or both male or both female?

thx

 

[JamesJR]

Could you show more pictures? You might just have a pair. The males
are a little bigger and have much more blue on the rear fins than the females do.