At what age can guppies reproduce?

[TeaPea]

I've been raising 7 fancy Guppy fry in a 5 gallon tank along with 3 adults (their mother died shortly after having them:( )

They were born the begining of May so are a little over 2 months old. They're almost the size of the adult males (except their tails aren't fanned yet). I noticed today a couple of them seem to have a pregnant look about them. I still can't even tell what sex they are.

Aren't they too young to be having babies yet?

[kveeti]

Females mature at about 3 months of age, perhaps sooner in a warmer tank. Males sexually mature somewhat sooner.

From: http://guppyplace.tripod.com/ FAQ section. I can't remember offhand exactly how old my "babies" were when they started with the grandkids but it wasn't long...