Why my guppies eating their own babies?

[professorjimjam]

I have some wild guppies in the tank and I noticed their reproduction rate is fast. But the problem is that the guppies are cannibals and they eat their own babies. I had 34 small newly born guppies and only six is left.

if guppies eat their one reproduction how their live is wild is sustained?

here is a picture of the leftover and I don’t know how to protect these against their own parents.

 

[jjohnwm]

They're just doing what comes naturally...and a good thing, too! A brood once a month or so, easily 30+ fry per brood, sexual maturity attained in only a few months...if the vast majority of them weren't eaten, what do you suppose the outcome of that would be after a few years?

If you want to save some of them, provide thick plant cover and feed the adults well. If you want to save all of them...separate them from the adults...but what's the long-term plan for all those guppies?

 

[professorjimjam]

They're just doing what comes naturally...and a good thing, too! A brood once a month or so, easily 30+ fry per brood, sexual maturity attained in only a few months...if the vast majority of them weren't eaten, what do you suppose the outcome of that would be after a few years?

If you want to save some of them, provide thick plant cover and feed the adults well. If you want to save all of them...separate them from the adults...but what's the long-term plan for all those guppies?

thank you very much! Very well explained. I will let them do whatever. At the end there maybe some of them left. I don’t need to overpopulatethe tank.