The Fish Guru

All About Bubble Eye Goldfish: Appearance Care and Breeding

Goldfish are a popular household pet, and the Bubble Eye Goldfish is a particularly unique and fascinating variety. The distinguishing feature of this fish is the two large bubbles beneath its eyes.

This article will provide you with a comprehensive overview of the Bubble Eye Goldfish, including its appearance, origin, and lifespan. You’ll also learn about the eye bubbles, size, physical characteristics, coloration, and sexing of this intriguing creature.

Species Summary:

The Bubble Eye Goldfish is a member of the Cyprinidae family and is native to China. It is a freshwater fish that can grow up to six inches long.

This fish is known for its two large fluid-filled sacs below the eyes that give it a distinctive look. These bubbles can grow up to half an inch in size and can continue to enlarge throughout the life of the fish.

The Bubble Eye Goldfish is typically a slow-moving fish and can survive for up to 15 years with proper care. Appearance:

The most remarkable feature of the Bubble Eye Goldfish is, of course, the two large bubbles beneath its eyes.

These bubbles are located on either side of the fish’s head and give it a distinctive appearance. The bubbles are filled with fluid and are delicate, making it important to provide a gentle environment.

These bubbles serve no biological purpose and are purely a result of selective breeding. Aside from the bubbles, the rest of the Bubble Eye Goldfish’s physical appearance is similar to that of other goldfish.

It has a round body and small fins. The body of the Bubble Eye Goldfish can be various colors ranging from orange to white, with some specimens displaying black or brown marks on their skin.

Size and Physical Characteristics:

The size of the Bubble Eye Goldfish can vary slightly, but on average, they grow to approximately six inches in length. Because of its delicate nature, you should avoid placing this fish in the same tank as other, more active species.

This is especially crucial when considering the cramped conditions typical of smaller aquariums. The Bubble Eye Goldfish is not an aggressive fish and can become the target for bullying by other, more active breeds.

The Bubble Eye Goldfish has small fins, making it a relatively slow swimmer compared to other fish species. This slow movement is critical for its survival, as it enables the fish to avoid predators.

In general, the Bubble Eye Goldfish is best suited for a home aquarium and should not be used for breeding purposes. Coloration and Sexing:

Bubble Eye Goldfish are available in a range of colors, including white, red, orange, black, and combinations of these hues.

The color of the fish can change as they mature, and it may change depending on water quality and dietary factors. One unique feature is the occasional presence of a black mask or black spots, which have no effect on the fish’s health or development.

Sexing Bubble Eye Goldfish is challenging, as there are no external differences distinguishing males from females. To determine the sex of your Bubble Eye Goldfish, it must be observed during breeding season.

During mating, the male will chase the female, wrap his body around hers, and release sperm. Eggs are fertilized, and the female will deposit them on aquatic plants.


The Bubble Eye Goldfish can survive from five to ten years, although optimal living conditions and good care can lead to a lifespan of up to 15 years. They require a consistent diet and a reasonably stable environment, so keeping them in a healthy state should not become too much of a task.

Like other fish species, the Bubble Eye Goldfish is susceptible to disease, and sudden changes to its environment or dietary behavior can be detrimental. Conclusion:

The Bubble Eye Goldfish is an intriguing and unique species of fish that makes an excellent addition to any home aquarium.

It is essential to ensure the appropriate water conditions, temperature, and food to ensure long-term health and wellbeing. With good care, your Bubble Eye Goldfish can thrive for many years, providing an endless source of fascination and entertainment for fish enthusiasts.

Bubble Eye Goldfish Care:

Keeping a Bubble Eye Goldfish requires some specific knowledge as the breed has delicate needs and requirements. This section will provide you with all the vital information necessary to maintain the health and wellbeing of your Bubble Eye Goldfish.

Special Needs of Bubble Eye Goldfish:

The Bubble Eye Goldfish is prone to several health issues and has unique needs compared to other goldfish breeds. The bubbles under the eyes make it difficult for them to see and navigate the tank.

Because of this, the tank set-up and placement are crucial since the fish need a calm, stable, and secure environment. Recommended Tank Size and Space Requirements:

For optimal living conditions, a Bubble Eye Goldfish needs a tank of at least 20 gallons, but the recommended size is 30 gallons.

The tank should be rectangular and not too deep to ensure that the fish can reach the surface of the water to breathe. The tank should also have a filter and a thermometer to monitor water temperature.

Since Bubble Eye Goldfish can be quite slow and delicate, ensure enough open space, with minimal dcor on the tank floor, to move around and avoid injury. Water Parameters for Bubble Eye Goldfish:

The water in the Bubble Eye Goldfish tank requires specialized attention.

The ideal temperature range should stay between 68 to 72 degrees Fahrenheit, and the pH should be around 7.0. A low pH level leads to stress and decreases the immune system, while a high pH level can lead to cloudy eyes. Water should be changed weekly, with 25% of the tank water replaced each time.

Setting up the Bubble Eye Goldfish Tank:

Setting up a tank for Bubble Eye Goldfish can be daunting, but it is a vital step in providing them with a healthy life. First, wash the tank with soap and water and rinse well to make sure no residue remains.

Next, add the substrate, decorations, and plants, leaving enough free space for your Bubble Eye Goldfish to swim. Fill the tank with treated water, set up the filter, and adjust the temperature.

Wait for the temperature to stabilize, and then add your Bubble Eye Goldfish. Common Possible Diseases in Bubble Eye Goldfish:

Some common health problems experienced by Bubble Eye Goldfish are fungal infections and bacterial infections.

Fungal infections occur when the fish is stressed, making it vulnerable to the growth of fungus on their skin or other parts of their body. Bacterial infections can occur if aquariums are not kept clean or if there are imbalances in the water parameters.

Other health problems include cloudy eyes, swim bladder diseases, and intestinal parasites. Keep an eye out for physical damages in your Bubble Eye Goldfish or unusual behavior changes, both of which are signs of ill health.

Food and Diet:

Bubble Eye Goldfish are omnivorous and require a well-balanced diet to stay healthy. The diet should be rich in vitamins, protein, and fiber, providing a mix of commercial and living foods.

Living food includes the likes of brine shrimp, daphnia, and bloodworms, while commercial food can consist of flakes and pellets. Only feed your Bubble Eye Goldfish as much as it can consume in a few minutes, preventing leftover particles from floating and disrupting water quality.

Recommended Feeding Regimen for Bubble Eye Goldfish:

A healthy Bubble Eye Goldfish requires regular feeding. Feed your fish once or twice a day, providing a mix of commercial and living food.

An ideal feeding schedule involves meals morning and evening, with two or three small feedings each day preferred over one larger meal. A quality and varied diet play a crucial role in the health and longevity of your Bubble Eye Goldfish.

By keeping to a consistent feeding regimen that fits these requirements, you ensure a happy and comfortable living environment for your Bubble Eye Goldfish. In conclusion, maintaining a Bubble Eye Goldfish tank requires knowledge and attention to detail in its care and environmental conditions.

Providing enough space and balanced nutrition, and keeping an eye on water parameters and potential health problems, contribute significantly to the overall health of your fish. By following good care practices and implementing them consistently, you can create a safe, long-term home for your Bubble Eye Goldfish.

Behavior and Temperament:

The Bubble Eye Goldfish is a popular and beloved aquarium fish known for its unique appearance. It is docile and gentle in nature, which makes it ideal for community aquariums with other peaceful fish species.

In this section, we will discuss the temperament of Bubble Eye Goldfish, their swimming behavior, and their compatible tank mates. Docile Temperament of Bubble Eye Goldfish:

Bubble Eye Goldfish have a docile temperament and are not aggressive towards other fish species.

They enjoy company and thrive in environments with other peaceful fish species. They are not recommended for community tanks with aggressive fish, as they can become targets for bullying, which may impact their delicate eye bubbles.

The Bubble Eye Goldfish is best kept with other slow-moving, peaceful fish such as other types of goldfish, Corydoras Catfish, and Otocinclus Catfish. Swimming Behavior of Bubble Eye Goldfish:

The swimming behavior of Bubble Eye Goldfish is fascinating and unique.

Due to their delicate eye bubbles, they have a low center of gravity and swim in short bursts rather than prolonged activity. As a result, you need to provide your Bubble Eye Goldfish with enough swimming space to avoid bumping into other aquarium furniture.

Bubble Eye Goldfish also tend to swim closer to the bottom of the tank than surface swimming, making aquatic plants and smooth substrate essential in their tank setup. Suitable Tank Mates for Bubble Eye Goldfish:

While Bubble Eye Goldfish are docile and gentle fish, they require suitable tank mates to ensure a peaceful living arrangement.

Other slow-moving, friendly fish varieties are preferred. One good tank mate is the fantail goldfish, which is similar in size and peacefully coexists with the Bubble Eye Goldfish.

Other compatible tank mates can also include small catfish and bottom-dwelling species such as the Kuhli Loach and Corydoras Catfish. Breeding:

Successfully breeding Bubble Eye Goldfish requires some knowledge and understanding of their reproductive process.

This section covers the breeding conditions necessary for Bubble Eye Goldfish, the spawning process, and caring for the fry. Breeding Conditions for Bubble Eye Goldfish:

Bubble Eye Goldfish become sexually mature when they reach two years of age and favor breeding conditions that are similar to their natural habitat in China.

These breeding conditions include high-quality water conditions, an optimal temperature range of 68-74 degrees Fahrenheit, and a stable, moderately acidic pH level. Ensure that Nitrate levels are less than 50 ppm to maintain optimal water conditions.

Spawning Process for Bubble Eye Goldfish:

The breeding process of Bubble Eye Goldfish seems complex but is a natural process. The male will develop white spots on its gill cover and fins when it is ready to breed.

The male will chase the female around the tank, leading her to plants or a spawning mop. During spawning, the male will fertilize the eggs, and the female will release them.

The eggs will adhere to the vegetation, and fertilized eggs develop little eyes within two days. Fry Care for Bubble Eye Goldfish:

After spawning, the fry hatch and remain on the vegetation for a few days to a week.

Once they become free-swimming, provide them with crushed flakes and brine shrimp. They should be fed three to four times daily.

To prevent them from being sucked into the filter, cover the filter intake. The fry also require a clean and cycled tank, with frequent water replacements of about 20% each week.

The parents can be kept in the same tank with the fry. Breeders should note that Bubble Eye Goldfish breeding can be challenging, and fry are susceptible to disease if water conditions are not optimal.

If breeding is not successful, professional breeding is an alternative option. In summary, the Bubble Eye Goldfish is an ideal aquarium fish due to its docile nature and unique appearance.

When breeding this species, special attention must be paid to the breeding conditions and fry care. By keeping to a detailed breeding plan, the rewards can be both satisfying and fascinating.

These fish are ideal for community tanks, and by providing them with suitable tank mates, you can ensure a peaceful living environment for your Bubble Eye Goldfish. In conclusion, the Bubble Eye Goldfish is a unique and fascinating species that requires specific care and attention to thrive in an aquarium environment.

Their delicate eye bubbles, low center of gravity, and swimming habits, make them docile and require the careful selection of tank mates. Breeding Bubble Eye Goldfish is a complex process that requires consideration of the spawning process and fry care.

With optimal living conditions, the Bubble Eye Goldfish can live up to 15 years. By following the guidelines outlined in this article, those interested in owning Bubble Eye Goldfish can ensure the well-being, health, and longevity of these fascinating creatures.

Remember to give your Bubble Eye Goldfish varied diet, clean water, spacious tank, and peaceful environment, and don’t forget to enjoy observing these beautiful fish that are true wonders of nature.

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