The average lifespan of a healthy guppies is around 2 to 3 years. With good care and a healthy environment, they can live up to 3 years. Female guppies tend to have a longer lifespan than males. Proper nutrition,  appropriate water parameters are key factors in ensuring a longer lifespan of guppies. Ultimately, providing a stress-free, well-maintained aquarium environment and a healthy diet is crucial in extending the life of your guppies.

A significant determinant of a guppy lifespan is its genetics. You don’t have the control over genetics of guppy. Most of the time, guppies with weak genetics will pass away before they reach 4 months or the adulthood.

Though guppies breed in huge quantities around 20 to 30 percent of guppy fries pass away due genetic makeup, poor water condition or with other disease related issues. Guppies that are raised in pond seem to have a higher survival rate than the ones that are brought up in aquarium tanks. The reason is that ponds are natural, large and  there is plenty of algae in ponds that produces oxygen which takes care of the overall health guppies.