when will i be able to seperate the male from female? i have platys, most are 7 weeks old. and how big do they need to be before i put them in the adult tank?
when to move fry and sexing them?
- Thread starter Plattypus5420
- Start date
Males have gonopodium's 
Google image gonopodium
Females will have an anal fin that is clearly fanish male gonopodium looks like a deformed fin with no fan
Google image gonopodium Females will have an anal fin that is clearly fanish
male gonopodium looks like a deformed fin with no fan 
My homie is versatile I tell ya! 
well that wraps it up for sexing them. You can put the juvies in when parents when they are big enough not to get swallowed, simple as that. Just a note on feeding. Livebearers generally have really long intestines and like to eat all the time. It's best to give them several small feedings daily (not to overfeed of course). If you have some constant algae growth in the tank they'll be very happy with that.