How long is the pregnancy of the guppies fish?

Gestation period for a guppy is around 28 days at 73F. If conditions are not as she wants them she can refuse to give birth and can even die rather than let them out. If you keep her properly fed and stick to the basic rules and make sure she is kept at the right temperature of around 70F to 75F she should drop her young at around the 28 to 30 day mark. The rules are. :- 1 inch of fish needs at least 1 gallon of water but more is better. :- Every tank needs a permanently running cycled filter. :- Every tank needs at least 50% of its water replaced every week.Follow the rules and you stand a chance of keeping fish successfully. Miss out on any of them, and I can guarantee that your fish will have constant health problems.