Identify my fry... 🤔 what sex

[bullgoose]

I really need help to identify these.. The only possibilities are guppy, mollie or a cross.

Can anyone positively identify them..? Crucially I want to know the sex of them..

Thanks...

 

[bullgoose]

They over a month now.. I really want to prevent any further breeding...

 

[GaryE]

Mollies, but if it's a month only and you've zoomed in on them, a month is too early to certain. They all look female at that age. If the anal fin becomes a pointy gonopodium, they will be males. They look older to me, and like you didn't know they were there and they got underfed.