I think I was 8 or 9 years old.

That's funny :)

huh???

And how do you separate guppies when sexing?

With a net?

do you mean how old are the guppies b4 you can tell what sex they are?? if so i have 4 week old babies right now and since they were 3 weeks old i can tell how many females i have as they already developed there "gravid spots" since last week

Hi
Think a better ?? would be how many remained the same sex you called ?? I have raised Swords platies for many years and still get fooled lol
gary