The Fish Keeping & Aquarium Guide.

What is a Pregnant Goldfish Called? All You Need to Know

Affiliate Disclaimer

As an affiliate, we may earn a commission from qualifying purchases. We get commissions for purchases made through links on this website from Amazon and other third parties.

A pregnant goldfish is called a gravid goldfish.

Goldfish are oviparous, meaning they lay eggs rather than give birth to live young. However, before laying eggs, female goldfish go through a process of internal fertilization.

During this process, the male goldfish releases sperm into the female’s body, fertilizing her eggs. The fertilized eggs are then laid and attached to aquatic plants or other surfaces in the tank.

Even though goldfish do not give birth to live young, they can still display some signs of pregnancy. Female goldfish carrying eggs may become noticeably fatter and rounder in shape, and their belly may appear swollen.

Some refer to this condition as “being gravid” or “being full of eggs.” However, there is no specific term for a pregnant goldfish, as they do not technically carry their young inside their bodies as mammals do.


Understanding Goldfish Pregnancy


Goldfish are among the most common aquarium fish due to their hardiness and ease of care. However, many people are not aware that goldfish can become pregnant. Female goldfish can lay hundreds or even thousands of eggs at a time.

The process of goldfish pregnancy is known as spawning. During spawning, the female goldfish releases eggs while the male goldfish fertilizes them.

This process can occur naturally in an aquarium or induced through various methods, such as changing the water temperature or adding certain chemicals.

It is important to note that goldfish do not carry their young internally as mammals do. Instead, the eggs are laid externally and left to develop independently. This means there is no such thing as a pregnant goldfish in the traditional sense.

Once the eggs are laid, they will typically hatch within a few days. Goldfish fry (baby goldfish) are very small and vulnerable when they first hatch, so providing them with proper care and nutrition is essential.

In conclusion, goldfish can become pregnant because they can lay eggs but do not carry their young internally. Understanding the process of goldfish pregnancy is essential for anyone wanting to breed goldfish or provide the best care for their pet goldfish.


The Myth of the Pregnant Goldfish


Goldfish are common pet fish that are often kept in aquariums or ponds. One of the most common misconceptions about goldfish is that they can become pregnant. However, this is a myth, and there is no such thing as a pregnant goldfish.


Origin of the Term


The term “pregnant goldfish” likely originated from the fact that female goldfish can carry eggs in their bodies. When a female goldfish is ready to lay eggs, her belly may appear larger, leading some people to believe she is pregnant. However, this is not the case.


Why It’s a Misconception


Goldfish do not give birth to live young like mammals do. Instead, they lay eggs that are fertilized by the male goldfish. Female goldfish can carry hundreds of eggs at once, released into the water, where they will hatch into fry.

While a female goldfish may appear to have a larger belly when carrying eggs, this is not the same as being pregnant. Goldfish do not have a uterus or any other reproductive organs that are similar to those of mammals.

In conclusion, the idea of a pregnant goldfish is a myth. While female goldfish can carry eggs, they do not become pregnant as mammals do. Goldfish owners need to understand the biology of their pets to provide them with proper care and attention.


Goldfish Breeding Process


Breeding goldfish is a fascinating process that requires careful attention to detail. To successfully breed goldfish, it is important to understand the mating rituals, egg laying, and fertilization process.


Mating Rituals


Before goldfish can breed, they must go through a mating ritual. During this ritual, the male goldfish will chase the female goldfish around the tank, nudging her and trying to entice her to lay her eggs. The female goldfish will then release her eggs, and the male goldfish will release his sperm to fertilize them.


Egg Laying


Once the female goldfish has released her eggs, they will float to the water’s surface. It is essential to provide a spawning mop or other suitable surfaces for the eggs to attach to, as this will prevent them from being eaten by other fish in the tank. Depending on the water temperature, the eggs will hatch in approximately 4-7 days.




For the eggs to hatch, they must be fertilized by the male goldfish’s sperm. Having at least one male goldfish in the tank is important to fertilize the eggs. Once the eggs have been fertilized, they will develop into baby goldfish, known as fry.

Breeding goldfish can be a rewarding experience, but it requires careful attention to detail and a good understanding of the breeding process.

By following the proper procedures and providing the conditions for the eggs to develop, goldfish breeders can raise healthy and happy fry.


Caring for Goldfish Eggs and Fry


Goldfish are known for their hardiness and ease of care, but breeding them can be more challenging. Once you have successfully bred your goldfish, providing proper care for the eggs and fry is essential to ensure their survival.


Egg Care


Goldfish eggs are typically laid on plants or other surfaces in the aquarium. It’s essential to keep the aquarium clean to prevent the growth of harmful bacteria that can harm the eggs.

The eggs should also be protected from other fish in the aquarium, as they may try to eat them.

One way to protect the eggs is to place a mesh breeding net in the aquarium. This will allow water to flow through but keep other fish from getting to the eggs. You can also remove the eggs and place them in a separate container with fresh water and an air stone to provide oxygen.


Fry Care


Once the eggs hatch, the fry will need to be fed frequently. They can be fed a diet of crushed flakes or baby brine shrimp, purchased at most pet stores. It’s important to provide small, frequent feedings to prevent overfeeding and to keep the water clean.

The fry will also need a clean and safe environment to grow. A separate tank or breeding net can keep them safe from other fish and provide a controlled environment. The water should be changed frequently to keep it clean and free from harmful bacteria.

In conclusion, caring for goldfish eggs and fry requires attention to detail and a commitment to providing a safe and healthy environment. Your goldfish fry can grow into healthy and vibrant adults with proper care.


Common Misconceptions


There are several misconceptions about pregnant goldfish that inexperienced fish owners often perpetuate. Here are a few of the most common misconceptions:

  • Pregnant goldfish are called “twins” or “pregnant”: This is not true. Goldfish do not get pregnant in the traditional sense. Instead, they lay eggs that are fertilized by male goldfish.
  • Pregnant goldfish can be identified by their size: While it is true that female goldfish may appear larger when they are carrying eggs, this is not always the case. The size of a goldfish can be affected by several factors, including age, diet, and water temperature.
  • Pregnant goldfish need special care: While it is essential to provide adequate care for all fish, there is no need for special care for pregnant goldfish. They can lay their eggs and care for their offspring without additional assistance as long as they are kept in a clean and well-maintained tank.

Fish owners need to understand the biology of their pets to provide the best possible care. Owners can ensure their goldfish are healthy and happy by dispelling these common misconceptions.




In conclusion, a pregnant goldfish is called a “gravid” goldfish. This term is used to describe any female fish that is carrying eggs or is in the process of laying them. While goldfish are known to breed readily in captivity, it is essential to note that breeding them can be a complex process that requires careful attention to water quality, temperature, and other environmental factors.

Overall, it is essential for goldfish owners to be aware of the signs of pregnancy in their fish and to take appropriate steps to ensure the health and safety of both the mother and her offspring. By providing a suitable environment and monitoring their fish closely, owners can help ensure that their goldfish remain healthy and happy for years.

Latest Posts

  • Are Sea Anemones Hard to Care For: Essential Tips for Maintenance

    Are Sea Anemones Hard to Care For: Essential Tips for Maintenance

    Sea anemones, often found colorfully adorning aquariums, are marine invertebrates with distinctive tentacles. They are part of the Cnidaria phylum, which includes corals and jellyfish and are known for their symbiotic relationships with clownfish and other species. Tending for sea anemones in a home aquarium requires specific attention to water quality, lighting, and feeding. Maintaining…

    Read more

  • Are Sea Anemones Dangerous to Humans: Uncovering the Truth

    Are Sea Anemones Dangerous to Humans: Uncovering the Truth

    Sea anemones are often perceived as exotic and colorful ocean-floor dwellers that have garnered attention for their unique appearances in marine environments. Their vivid colors and graceful tentacle movements can capture the interest of divers and aquarium enthusiasts alike. Generally, they are not considered a threat to humans; most species have a sting that is…

    Read more

  • Why Are Sea Anemones Sticky: Uncovering the Secrets of Their Adhesive Powers

    Why Are Sea Anemones Sticky: Uncovering the Secrets of Their Adhesive Powers

    Sea anemones are fascinating marine creatures, often admired for their vibrant colors and graceful tentacle movements. The sticky sensation one experiences when touching an anemone might not be immediately apparent. This trait serves a crucial role in their survival. The stickiness is due to a specialized type of cell called a cnidocyte, which contains a…

    Read more