Telling the sex of 1cm guppy fry

Pufferfish22

I think she's a he!!!!!!!!!! Small fry appears to be developing a pointed anal fin, maybe this is why the big boys are not harrassing him. Fingers crossed!! What age do they start to develop colour, it's been such fun watching our baby get bigger each day

Amethyst123

If you're seeing anal fin development, you should start to see color any time. How big is he/she?