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

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 when fish are pregnant?

Pregnant female fish often develop a “gravid spot” on the abdomen near the rear vent. This is typically black or bright red, and grows more pronounced over the course of the pregnancy. Some fish always have this spot, but it will typically grow brighter or darker during once the fish is pregnant.

How do you know when a fish is going to give birth?

The Eyes of the Fry and Signs of Impending Birth

To accommodate the developing eggs, the mother’s body expands, becoming deeper and broader. A few days before delivery, she develops a bulge below the gills, her outline becoming fairly square in this region, while the gravid spot has enlarged its area.

How long are small fish pregnant for?

But here’s an indication of how long each of the popular species is pregnant for: Guppies 21-35 days. Platies 24-35 days. Swordtails 28 days.

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How long is a fish pregnant for?

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.

Do molly fish lay eggs?

Mollies belong to a class of fish called livebearers. They don’t lay eggs; their young come out swimming. And they are prolific breeders as well. … 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 are fish pregnant for goldfish?

It will take roughly 3 weeks for the eggs growing inside of a goldfish to be ready to be laid. However, female goldfish will only develop eggs given the right conditions.

How many days molly fish give birth?

Gestation and Birth

Female mollies will gestate their young for about 60 days. They can give birth to between 40 and 100 fry.

Where do pond fish lay their eggs?

The vegetation of the aquatic plants is where the females will lay their eggs when they are ready. As a female drops her eggs (500-4000), several males will follow closely behind and attempt to fertilize the eggs.

How many eggs do fish lay?

Aquarium fishes are broadly grouped into 2 categories on the basis of their breeding behaviour, viz., egg-layers (oviparous) and livebearers (ovo-viviparous). … Important group of egg-layers are barbs, rasboras, goldfish, tetras, danios, betas, angelfish and gouramis. Among them barb is one of the most important groups.

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