Your question: How do you know when a fish is having babies?

Will Molly fish eat their babies?

In a breeding net, the fry are exposed to the same water conditions the rest of the tank is experiencing. Cannibalism is normal with mollies and other livebearers like guppies and platys. As fecund as they are, you don’t really need to worry about saving every last one.

How do fish mate?

In most cases, the female drops eggs in the water which are immediately fertilized by sperm from the male. Another way is for fertilization to occur within the females body before she drops them into the water. With the third and final method, the female retains the eggs within her body and the young are born alive.

Will baby fish survive in my tank?

Not necessarily. Many fish breed very easily and produce great numbers of offspring, simply because very few will survive to adulthood. The more fish in your tank, the more you will need to feed them, the more feces they will produce and the harder your filtration system will have to work.

How many babies can a Molly have at one time?

Gestation and Birth

They can give birth to between 40 and 100 fry. Mollies that are young or are having one of their first few pregnancies will tend to give birth to a smaller rather than larger number of fry. When a molly female is near her time to give birth, you will need to separate her from the rest of the tank.

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