hey there,
well i was wondering what age could a guppy start breeding
because my 4 cm long guppy about 2 months and 2 weeks old now,have
big bellys.

They have most of there colors now.

I'm told they can usually breed by the age of 3 months! You shouldn't have to wait too much longer as long as you have males and females together!

yup, i have females and males togther.
my adult female, looks so fat i think she might have fry,
and 1 of the smaller fish has a big belly aswell.

Yep, my baby guppies had gravid spots within a couple of months. I have a variety of ages of babies now, and I have now idea who the mama is to who! I only have one male that I know of, as ALL the new babies appear to be female from the looks of their coloring and the development of the gravid spot. So he is a busy boy, I guess.

What about diffent colors when mateing can something
bad happen at all, i have this bright orange male,and my
females are black and blue..... could this make a wierd fish?
and the male always fallows the female, it must be anoying for her.

i think its a couple of months, as soon as they start getting colours they can breed i think.

Lol, i guess they are pretty ready to breed.
They have almost all there colors.Some of them have more colors then
others,i guess this could be the females....

I agree,I've always known it too be around 3/4 months old,and once they start....forget it!!!!

OKay well,thanks every one ill give an update soon!