Frequent question: How long do fish stay pregnant?

As examples, the female swordtail and guppy will both give birth to anywhere from 20 to 100 live young after a gestation period of four to six weeks, and mollies will produce a brood of 20 to 60 live young after a gestation of six to 10 weeks.

How do you know if your fish is pregnant?

As your female fish becomes pregnant, she will grow a bulge at the back of her abdomen. This typically appears over the course of 20-40 days. Does your fish have a red or black spot? Sometimes, when a female fish is pregnant, she will develop a “gravid spot” on the abdomen.

How long does it take for a female fish to lay eggs?

Hatching

Bettas: 2-3 days
Goldfish: 2-7 days
Cory Catfish: 3-6 days
Angelfish: 4-7 days
Tetras: 2-5 days

How do fish give birth in a tank?

Some aquarium fish carry the eggs inside of them. When the eggs are fertilized, they eventually hatch inside the mother, and the babies emerge in a live birth. Other types of fish lay hundreds of eggs in nests within the aquarium, in this case, the males fertilize these eggs, and then they hatch into live fish.

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How long does a Molly stay pregnant?

The gestation period of a molly fish is around 60 days. Female mollies can store sperm for months and may fertilize eggs as often as every 30 days, even when no male is present in the tank. Mollies may release 10 to 60 live fish at a time.

Why does my fish look pregnant?

Dropsy refers to a condition in which fish often have hugely swollen bellies, and the continuing use of the term probably has to do with how it so accurately depicts the visual symptom: the belly drops down. Sometimes the condition is also known as bloat.

What do I do if my fish is pregnant?

The female can be placed back into the main tank once she has given birth and the fry can be raised in the breeding trap or a larger breeding net. Ideally, pregnant females should be placed on their own in a separate aquarium with lots of feathery plants where they can give birth in a stress-free environment.

Do fish eat their babies?

Yet scientists have repeatedly observed males eating some of the carefully-provided for eggs. Filial cannibalism often occurs in fish species in which males care for the eggs or young.

How long does a fish live?

Hatching Time

After release and fertilization, goldfish eggs hatch in two to seven days. In water at 84 degrees Fahrenheit, fertilized goldfish eggs hatch in 46 to 54 hours; in water at 70 to 75 degrees Fahrenheit, they hatch in five to seven days.

How often do fish have babies?

Depending on water conditions, temperature, and diet some livebearers can have broods as often as every four to eight weeks. You can tell if a female is ready to give birth by her enlarged abdomen or a dark spot located near her anal fin. The spot will turn darker as her delivery date nears.

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How do I know if my fish are mating?

Mating Ritual

Signs that your goldfish are ready to mate include white spots along the gills of the males, and the female will become fatter and more rounded. The male will then chase the female around the tank to encourage her to release her eggs.

Do baby fish need their mothers?

They don’t lay eggs; their young come out swimming. And they are prolific breeders as well. Molly babies get no protection from their parents. The tiny fish are just as likely to be eaten by their own mother as they are by other fish in the aquarium, so to survive they’re going to need a little help.

How long do guppies stay pregnant?

The gestation period of a guppy is typically 21–30 days, but can vary considerably. The area where a pregnant guppy’s abdomen meets the tail is sometimes called the “gravid patch”, or “gravid spot”.

Will molly fish eat their babies?

It is because the mollies are very nippy and tend to become very aggressive eater. They will eat almost anything that fits in their mouth. The new born babies are very small just about the size of a pellet food which is why molly are seen eating their own babies after giving birth.

Can mollies and guppies breed?

Potential cross breeding between guppies and mollies

These adult fish are not fertile and will not reproduce. Sadly, most babies from the guppies and mollies will die before, during or shortly after they are born. Both guppies and mollies can carry sperm for a long time after reproducing.

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