When Can I Sex My Baby Mollies?

[cameron2233]

hi all,
my mollie fry are just under one week old how old do they have to be before i can tell the males and the females appart?

thank you

 

[helterskelter]

The anal fin on the males will first start to thinken at about 5-8 weeks.
How ever this process may take some fish over 10 months to devlope