How Many Eggs Do Goldfish Lay? {At a Time / Year}

Unlike some other aquarium fishes that are livebearers, goldfish lay eggs, Are you wondering how many eggs do goldfish lay?

This is an important thing to know as you can then plan how many baby goldfish you might have.

How Many Eggs Do Goldfish Lay?

A female goldfish will typically lay around 1000 eggs and can lay up to 10,000 eggs.  Only a small amount of these eggs will hatch due to not all of them will get fertilized and some will be lost to predators.

Healthy goldfish eggs can have a wide variety of colours ranging from white, yellow to orange. They appear small, and they also sometimes look like transparent bubbles. Likewise, as a survival strategy, the eggs are also very sticky to help them adhere to the surface of their aquarium plants.

Likewise, goldfish can spawn multiple times weekly during the breeding season. These fertilized eggs remain outside the body of the goldfish until they hatch before eventually growing to free swimmers.

Goldfish can also lay eggs without spawning with males, just like some chickens. These eggs are, however, infertile and cannot hatch. They end up getting decomposed in water or eaten up by other tank members. If you want to be sure the eggs are fertilized and can hatch, you can find out by checking for tiny black specks in the eggs after 2-3 days.

How Many Eggs Can A Goldfish Lay

How Often Do Goldfish Lay Eggs

Goldfish are known to lay eggs during their breeding season, which typically occurs in the spring or early summer. The frequency with which goldfish lay eggs depends on various factors, including their age, health, and environmental conditions.

In general, mature goldfish can lay eggs multiple times throughout the breeding season, with intervals ranging from a few days to a couple of weeks between spawning events.

During each spawning event, a female goldfish can release hundreds or even thousands of eggs.

The eggs are usually sticky and adhere to aquatic plants or other surfaces in the tank or pond. Once the eggs are laid, the male goldfish fertilizes them externally by releasing milt (sperm) over the eggs.

It’s important to note that goldfish kept in artificial environments such as aquariums may not have the same breeding patterns as their wild counterparts. Factors like water temperature, diet, and other environmental conditions can influence their reproductive behavior.

How Many Goldfish Eggs Survive

The survival rate of goldfish eggs can vary depending on several factors, including the conditions in which they are laid, the care provided by the parent goldfish or the breeder, and the presence of potential threats or predators.

Goldfish eggs are typically laid in large numbers to increase the chances of survival.

Not all of the eggs will successfully hatch and develop into healthy fry (baby fish). Various factors can affect the survival rate, including water quality, temperature, humidity, and the presence of any pathogens or parasites.

Typically, a portion of the eggs may be infertile or fail to develop properly, leading to their demise. Additionally, some eggs may become preyed upon by other fish, invertebrates, or even certain aquatic plants.

In optimal conditions with appropriate care and protection, a significant number of goldfish eggs can survive. It is difficult to provide an exact percentage or estimate of the survival rate, as it can vary greatly depending on the specific circumstances. However, it is not uncommon for a well-managed goldfish breeding effort to yield a reasonably high number of surviving fry.

What Time of Year Do Goldfish Lay Eggs

Goldfish typically lay eggs during their breeding season, which is influenced by environmental factors such as water temperature and the length of daylight. In most cases, goldfish tend to spawn in the spring or early summer when the water temperature starts to rise.

The exact timing of goldfish spawning can vary depending on the specific breed of goldfish and the geographical location.

However, in temperate regions, it is common for goldfish to begin their breeding behavior when the water temperature reaches around 68 to 74 degrees Fahrenheit (20 to 23 degrees Celsius).

The longer daylight hours and warmer water temperatures of spring stimulate the goldfish’s reproductive instincts.

During this time, female goldfish release their eggs, and males chase and fertilize them with their milt (sperm). The eggs are usually laid on submerged plants or other surfaces in the water.

What Do Goldfish Eggs Look Like?

It is one of the well-known goldfish facts that a female goldfish can lay about a thousand eggs in one spawning. In case you are wondering what spawning is, spawning is defined as the release or deposit of eggs by fishes. Goldfish eggs have unique features, and they take distinct shapes.

Goldfish eggs are small, and they appear like round bubbles. They can take orange, yellow, in a few cases, but they often have transparent colors with a dark spot in the middle. They are also able to adhere to surfaces because they are sticky.

However, you will most likely find your goldfish eggs attached to the surface of aquarium plants.

Also, since goldfish are not livebearers, they don’t carry their young ones alive. Therefore it is wrong to say goldfish are pregnant, and it is more appropriate to say they are egg-bind.

Signs Your Goldfish Is Ready To Lay Eggs

Aquarium owners must be very observant if they want to know when it’s almost time for goldfish to lay eggs. Males get the signal that it is time for the female goldfish to spawn when they release pheromones into the water. But it takes a little more in the case of aquarium owners. Here are five ways your goldfish is egg-bind and ready to lay.

Being Chased Down By Other Goldfish

You should be observant about the behavior of your goldfish towards one another, mainly adult male and female. When female goldfish are ready to release their eggs, they release particular pheromones into the water. This hormone sends a signal to male goldfish that the female is in a breeding condition. The male consequently starts chasing down the female till they release the eggs.

Chubby Stomach

Chubby stomach might be a simple way to know your goldfish is ready to spawn if you pay keen attention to their physical outlook. The stomach won’t be swollen, and it will just give a plump protrusion that looks like gravid. Nevertheless, you should also know that your fish might look completely normal physically and still be carrying eggs.

Lopsided Belly

If you view your goldfish from above and you discover it has a lopsided belly, it might be an indication of spawning. This lopsidedness often occurs as a result of eggs filling one side of the abdomen while the other remains normal.

Breeding tubercles In Males

You can shift away from the females and even use your male goldfish to discover when female goldfish are spawning. It is common for male goldfish to develop breeding tubercles on their gills and pectoral fin during spawning. However, this is not a sign that can fully guarantee that your goldfish is ready to spawn. It can, however, provide a lead.

Eggs In Goldfish Tank

Yes, you read that right. You can have goldfish eggs stuck on your hand if you dip your hand in their tank during spawning. This can be a positive sign that your goldfish is pregnant.

How Long After Goldfish Lay Eggs Do They Hatch

After goldfish lay eggs, the time it takes for the eggs to hatch can vary depending on factors such as water temperature and environmental conditions. On average, goldfish eggs typically hatch within 4 to 7 days, but this can range from 2 to 10 days.

The water temperature plays a significant role in the development and hatching of goldfish eggs.

Warmer water temperatures generally accelerate the incubation process, while cooler temperatures can prolong it. It’s important to maintain a stable and suitable temperature for the eggs to ensure their successful development.

During the incubation period, the eggs go through various stages of development. Initially, the eggs are translucent and may appear whitish or yellowish.

As the embryos grow, the eyes become visible, and the bodies of the fry start to take shape. Just before hatching, you may notice tiny fish movements within the eggs.

Once the eggs hatch, the fry emerge and become free-swimming. At this stage, they are highly vulnerable and require appropriate care and a suitable environment to ensure their survival. Providing proper nutrition, a safe tank or pond, and adequate water quality are crucial for the well-being of the goldfish fry.


Hello, I'm Jason. I'm the guy behind I volunteer at my local fish shop and I created this site to offer tips and advice on the fish I care for.