Pond Boss Forums STOCKING A NEW POND Creating the food chain Rosy / Golden GAMS

I suppose it all depends on how many males/females you are starting out with, and what the water temp is where the pond is at.....

Temperature has been shown to change the length of time it takes them to reach reproductive maturity and body size. This species is also known to give birth to live young instead of laying a clutch of eggs.[11][12] The breeding season for Gambusia holbrooki is between midspring and midautumn, with the peak breeding time being around summer. Females can have up to nine broods per mating season, with the average size ranging from five to 100.[11] The variability of the average brood size is due to many variables, including temperature, age, and available nutrients. Higher temperatures have been shown to increase the fecundity of this species.[12] The gestation period for this species is between 22 and 25 days.

The offspring juvenile stage lasts between 18 days and eight weeks. Once again, changes in temperature affects these numbers; colder temperatures decrease and higher temperatures can increase maturity. This species can have several generations within their breeding period due to the fast rate of growth.

Then you have the variable if any predacious insects are in the pond.


Short answer, there's no way to tell.