http://forum.aqua-fish.net/ A forum devoted to aquarium fish, plants, techniques and fish keeping as a whole. en http://forum.aqua-fish.net/?topic=guppies_#1 Hello, if you have any facts and pictures you would like to share then i am happy :) I would also like any one to anwser my questions please: 1) how old do guppies have to be before they can have fry? 2) is the temperature suposed to be warm or cold ? 3) when can you tell the sex ? AbbieH_789 2009-05-17