I was breeding guppy's a couple months ago and then the mom and dad died, but I still had over 30 fry. Now the fry are grown up and I noticed I could finally see the male's gonopodium (I swear it popped up overnight). He has been bugging the females lately... but could have he impregnated them before I noticed the gonopodium (I mean a few weeks ago, not a few days)? Should I expect babies in 30 days, or will it take longer for them to... mate.. because there still young (About 3 months)? There already about an inch in length..

More then likely your fish are pregnant. Guppies breed like rabbits! A lot of people who own the big fish will breed guppies and feed them to their fish.. lol Horrible, I know.

Here's a website for you http://www.breeding-guppies.com/breeding.html

Thanks Lucky!