How many babies do fish have?

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 fish have babies all at once?

It can often be difficult to identify when a fish is pregnant, and depending on her breed your fish can give birth to anywhere from a dozen to a couple hundred fray at once. … When the eggs are fertilized, they eventually hatch inside the mother, and the babies emerge in a live birth.

Do fish lay eggs or give birth?

Fish reproduce by bearing live young or by laying eggs. Livebearers give birth to fully formed and functional young called fry. The eggs are fertilized and hatch within the female. … Most species of livebearers kept in home aquariums are generally easy to breed.

How do you tell if a 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.

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How do fish deliver babies?

Most fish release thousands of eggs, scattering them in the water where the male fish fertilize them. The eggs develop and hatch into larvae (baby fish) without any help from the parents. … A few kinds of fish keep their eggs inside their bodies, so when they hatch they give birth to live young.

How long is a fish 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.

Do fish eat their babies?

Sometimes he guards several clutches by different females, cleans the nest, and fans oxygen towards the eggs to improve their supply. 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.

Can fish have live births?

Fish. Live birth is also rare in fish, accounting for about two percent of known species, including guppies and sharks. … The sand tiger shark or ragged tooth shark, a live-birthing species, take that a step further by eating their developing siblings in the womb.

How many eggs do fish lay at once?

The methods of reproduction in fishes are varied, but most fishes lay a large number of small eggs, fertilized and scattered outside of the body. The eggs of pelagic fishes usually remain suspended in the open water. Many shore and freshwater fishes lay eggs on the bottom or among plants. Some have adhesive eggs.

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Will my goldfish have babies?

The first thing to know: there is no such thing as a pregnant goldfish. These fish do not carry live young within them until gestation, and they do not give birth to live fish. Goldfish are an egg-laying species.

What is a life span of a goldfish?

Goldfish have a lifespan averaging about 10-15 years, with some varieties living up to 30 years when provided with proper care. Unfortunately, many goldfish do not reach their lifespan potential due to inadequate housing conditions. Housing needs to meet both their behavioural and physiological needs.

How many babies can a molly fish have?

Gestation and Birth

Female mollies will gestate their young for about 60 days. 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.

What are fish babies called?

Eggs: Fertilized eggs develop into fish. … Larval: Larval fish live off a yolk sac attached to their bodies. When the yolk sac is fully absorbed, the young fish are called fry. Fry: Fry are ready to start eating on their own.

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.

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