When can a fish have babies?

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.

At what age do fish have babies?

Determine the age of the pond fish. Koi should be old enough to have reached sexual maturity at around two years old (see Reference 3). Look at the females carefully for any signs of swelling, which could indicate that maturing eggs are inside her.

How fast can fish get pregnant?

Guppies 21-35 days. Platies 24-35 days. Swordtails 28 days.

How do you know when 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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What age do fish lay eggs?

Reproductive Cycle. Goldfish reach their sexual maturity between their first or second year, but it isn’t until age 6 or 7 before they start to reproduce. In the wild, female goldfish lay their eggs around proffered fixed objects, substrate vegetation or immersed tree roots.

Will my goldfish have babies?

Do goldfish give birth to live young? … “, goldfish don’t actually give birth to “live” young that swim away as soon as they are born. Goldfish lay eggs, which attach to objects in the tank or pond, such as leaves, and stay there until the goldfish babies (or “fry”) hatch.

How long are 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.

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.

How do you tell if a fish is a boy or a girl?

Males are often slimmer but larger-bodied than females and are more vibrantly colored. The dorsal and anal fins of the male are more pointed, larger and more flowing than in the female. In many species, the male will display egg-shaped markings on the anal fin known as egg spots.

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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.

When will my Molly give birth?

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.

How many babies do fish have 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.

What do goldfish do when pregnant?

Spawning. When she is ready and the environmental conditions are right, the female goldfish will release hundreds of eggs into the tank. In fact, a goldfish can lay up to 1,000 eggs at a time, although not all of them will survive. These eggs will stick to plants, or if you have added one, a spawning mop.

How old is a 2 inch goldfish?

Goldfish Growth Chart

Age Slim-Bodied Goldfish Fancy Goldfish
1 month 0.9 inches 0.9 inches
6 months 2 inches 1.5 inches
12 months 3.25 inches 2.75 inches
18 months 4.5 inches 3.5 inches

How do fish make babies?

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.

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When will goldfish breed?

Goldfish will spawn at 1 year, but the ideal age is between two and four years. Fish younger than this tend to throw small numbers of small eggs. Small eggs produce small fry which is not desirable. Fish older than this may spawn a large number of large eggs, but the number of infertile eggs and deformed fry is high.