Bubble Eye Goldfish Care: Complete Guide for Beginners

Learn how to properly care for Bubble Eye Goldfish! Despite their delicate nature, with the right knowledge, they make splendid pets for beginners. We’ll dive into their needs, from water conditions to breeding, to ensure your Bubble Eye thrives.

bubble eye goldfish

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Bubble Eye Goldfish Species Profile and Identification

The Bubble Eye Goldfish is a small and distinctive fancy goldfish known for its unique appearance. Its main characteristic is the two large fluid-filled sacs that develop beneath its eyes.

  • Appearance: The Bubble Eye Goldfish has metallic scales, a dorsal-less body type, and double tail fins. They possess eyes that point upwards, accompanied by two pronounced fluid-filled sacs. The sacs under their eyes wiggle as they swim, lending them an unusual but charming look.
  • Size: A mature Bubble Eye typically grows up to 3 to 4 inches (7.5 to 10 cm) in length. However, under optimum conditions, they can reach up to 6 inches (15 cm).
  • Color: They come in a variety of colors such as red, orange, white, calico, and the less common, black. The consistency in bubble color and size is the mark of a well-bred specimen.
  • Distinctive traits: The highlight of this breed lies in its “bubbles.” These eye sacs develop about three months after the fish hatches. They are quite delicate and are prone to popping, resulting in infection risks.
  • Lifespan: With proper care, Bubble Eye Goldfish can live up to 15 years, although the average lifespan ranges between 6 to 10 years.

This breed has variations including a long or more rounded body type and matte, metallic, or nacreous scales presentation. A recent adaptation even sports four eye sacs rather than the usual two.

They are peaceful, socially reluctant, and have limited visual ability due to the location and size of their bubbles. As a result, they are not strong swimmers and have a distinctive low-bobbing movement.

Bubble Eye Goldfish Supplies

When setting up an aquarium for your Bubble Eye Goldfish, there are basic supplies you need to consider:

  • Aquarium: At least 20 gallons or 75 liters sized tank will give room for your goldfish to swim comfortably.
  • Aquarium Stand: Ensure to have a sturdy stand that can hold the weight of a full aquarium.
  • Filter: Choose a gentle water filter as Bubble Eye Goldfish have fragile skin sacs. Make sure the water inflow is not too strong.
  • Heater: As they can handle a temperature between 55 to 80F (10 to 27 C), a good aquarium heater is needed.
  • Aquarium Lighting: A basic LED light will suffice. Adding a timer will be useful to create a regular lighting schedule.
  • Substrate: Soft substrate is best to prevent injuries to your goldfish.
  • Tank Decorations: Sharp objects can cause harm to the skin sacs of Bubble Eye Goldfish. Therefore, smooth and rounded decorations should be chosen.
  • Test Kit: To maintain the water quality, purchase a test kit to check pH, hardness, ammonia, nitrate and nitrite levels.
  • Goldfish Food: They are omnivores. You can give diverse food like flakes, pellets, green vegetables, and occasional protein treats like shrimps or daphnia.

Let’s discuss setting up your tank for the goldfish.

Bubble Eye Goldfish Tank Setup

When setting up a tank for your Bubble Eye Goldfish, remember it’s not just a place for them to live, but a home they thrive in. First off, a size of 20 gallons (75 liters) minimum is recommendable. Why so large? They grow up to 6 inches (15.2 centimeters) and they need proper swimming space.

No sharp objects or decorations should be present in the tank. The bubble eyes of the goldfish are delicate, a collision could damage them and even cause infections. Equip your tank with smoothly surfaced ornaments instead.

  • Substrate selection involves two types: sand or small-sized, smooth gravel. The latter facilitates feeding and prevents the goldfish from occasionally swallowing a pebble.
  • Plants are a great addition, but opt for robust ones. Fine leafed or delicate plants may be disturbed by the fish. Java ferns and anubias can be good choices.

Move on to the filtration system. Air-driven sponge filters or hang-on-back filters are ideal for goldfish tanks. However, modify the intake tube with foam to prevent the bubble eyes from getting sucked into the filter. Equally important is a regular lighting system.

Lastly, consider an appropriate heater for your tank. Even though they can tolerate temperatures of 55 to 80°F (10 to 27°C), maintaining around 70°F (21°C) is better for their overall well-being. Providing a properly set up environment is vital for your Bubble Eye Goldfish’s health and longevity.

Bubble Eye Goldfish Water Requirements

The water quality for your Bubble Eye Goldfish is of utmost significance. 60-80°F (15-27°C) is the ideal water temperature for these fish, with a pH range of 6.0 to 9.0.

  • Keep an eye on the Hardness level; it should range from 6 to 12 dGH.

Stable water conditions are imperative for Bubble Eye Goldfish. Sudden changes in pH, temperature, or hardness can stress the fish or even prove fatal.

  • Invest in a high-quality aquarium thermometer and test kits for pH and hardness.

Water changes are also crucial for maintaining a clean environment. Aim for weekly water changes up to 30 percent of the overall tank volume.

  • Take care to remove any waste or leftover food during water changes.

While introducing new water, make sure it’s dechlorinated. Chlorine and chloramines found in tap water can be harmful to your Bubble Eye. It’s recommended to use a standard water conditioner every time you add new water to your tank.

Remember, the water conditions should be as close as possible to the Bubble Eye Goldfish’s natural habitat to facilitate their overall health and wellbeing.

Bubble Eye Goldfish Diet and Feeding

Caring for a Bubble Eye Goldfish involves providing a balanced and nutritious diet for its optimal health. Bubble Eye Goldfish are omnivores, which means they eat both plant matters and proteins. Algae make up a vital part of their diet, but they also enjoy insects, crustaceans, and smaller fish.

Feeding your Bubble Eye Goldfish a balanced diet is essential. Be aware to not overfeed your fish; they should be fed once or twice a day. Overfeeding can lead to several health problems, including poor water quality in the tank due to leftover food.

Since freshwater biodiversity is vast, you can feed your fish a wide array of foods, including:

  • Leafy greens: spinach, lettuce, peas
  • Worms: bloodworms, tubifex worms
  • Brine shrimp

It’s important to feed a variety of foods to ensure they get all the necessary nutrients. Many breeders and hobbyists praise commercially prepared food, which comes in the form of flakes or sinking pellets. Despite being practical and balanced, be sure to compliment this with fresh or live foods for diversity.

Feeding might require some observation and adjustments since each fish has its own appetite. Overall, remember to clean uneaten food after 2 minutes to maintain a healthy habitat.

Bubble Eye Goldfish Care Schedule

Caring for a Bubble Eye Goldfish requires a consistent and thoughtfully planned schedule. Apart from feeding and observing daily, several key tasks need to be done on a weekly, bi-weekly or monthly basis. Remember, the most important aspect of care is consistency.

Daily Care:

  • Feed your fish twice a day. Don’t overfeed, which can lead to health problems and dirty water. 2-3 small meals per day should suffice.
  • Observe your fish for any signs of disease.

Weekly Care:

  • Test the water parameters. This is vital to maintaining the right environment.
  • Clean any algae from the sides of the tank.

Bi-weekly Care:

  • Perform 25% water changes. This will help eliminate any build-up of harmful nitrogenous wastes.

Monthly Care:

  • Check over and clean equipment such as filter and pumps.
  • Replace or service any faulty equipment immediately.

And remember to always keep a check on your fish’s bubble sacs. They are delicate, and any damage could lead to bacterial infection. Keeping with this schedule helps ensure that your Bubble Eye Goldfish remain healthy and happy. This, in turn, will contribute to their lifespan, which can be up to a whopping 15 years!

Remember that these are basic care schedules. Each individual fish might require a slightly altered schedule depending on its health and the condition of your tank.

Bubble Eye Goldfish Health Problems

Bubble Eye Goldfish are admired for their unique beauty, but their distinctive eye-bubbles also make them more susceptible to health problems. A significant challenge in their care pertains to their fragile bubbles, which are quite delicate and prone to injury. If these bubbles burst or are punctured, it leaves the fish susceptible to infections.

  • Bubble Damage: Accidental collisions with tank decor or other fish can rupture the fish’s bubbles, exposing the interior sac. These areas are prone to bacterial and fungal infections.
  • Swimming Challenges: Bubble eye goldfish are not strong swimmers due to their distinctive eye bubbles. They tend to bob head-first and have difficulty avoiding obstacles. This can lead to injuries, adding to concerns about their fragility.
  • Respiratory Diseases: Impaired swimming also leaves them more vulnerable to respiratory diseases, as they may struggle to reach the surface to breathe.

Get yourself familiar with common aquatic diseases to promptly recognize and treat them, minimizing suffering for your fish. The most common among these are Ich, dropsy, and fin rot.

The fish can also suffer from constipation due to inappropriate diet. Keep the water clean, maintain moderate temperature levels and feed the fish a balanced diet to keep the health issues at bay.

Prevention is always better than cure. Periodic tank cleaning, optimal water conditions, and keeping an eye on unusual fish behavior are steps every fishkeeper must follow religiously. 

Bubble Eye Goldfish Tank Mates

Choosing the right tank mates for your Bubble Eye Goldfish is essential to ensure a peaceful environment.

Black moorscelestial goldfish, and demekin goldfish are not only compatible but recommended. These breeds don’t pose a threat to the Bubble Eye’s delicate eye sacs and offer fair competition for food.

Avoid fast or aggressive swimmers like tiger barbs, and large fish like oscars. These can stress and even injure your pet goldfish.

Here’s a quick reference list of suitable tank mates:

  • Black Moor Goldfish
  • Celestial Eye Goldfish
  • Demekin Goldfish
  • Other Bubble Eye Goldfish

Keep in mind, Bubble Eye goldfish are weak swimmers and have impaired vision. So, try to ensure that each of your fish is getting an equal amount of food.

Remember, a harmonious tank is key to a happy fish. Choose tank mates wisely to ensure your Bubble Eye Goldfish feels safe and comfortable in its home.

Bubble Eye Goldfish Breeding

Breeding Bubble Eye Goldfish can be quite a fascinating pursuit. Being egg layers, they reproduce by the female laying eggs and the male fertilizing them. However, keep in mind that they need specific conditions for successful breeding.

Ideal Environment is quintessential to commence spawning. Create a comfortable water temperature around 68 to 74 °F (20 to 23 °C) with a lesser water depth, usually between 6 to 8 inches (15 to 20 cm). Indulge in partial water changes, 20% of the tank volume every day, as it tends to simulate the rainy season, encouraging spawning.

The diet also plays a significant role. Increasing live foods in the diet such as brine shrimp and bloodworms seems to encourage breeding behavior. It’s essential to provide a high-quality diet to ensure the fish are well-nourished to lay healthy eggs.

Spawning Mop or Java Moss provides an excellent place for the eggs. This ensures that any eggs laid have a good chance of being fertilized and not eaten.

When you notice the female getting plumper and the male starting to chase her, it’s likely spawning time. Post-laying, eggs would hatch in about 4 to 5 days. However, it’s best to remove the adults to a different tank as they have a propensity to devour the eggs.

Breeding isn’t an easy task, especially with Bubble Eye Goldfish because their delicate nature makes them more vulnerable. But with patience and meticulous planning, you could breed your stunning Bubble Eye Goldfish successfully.


Caring for Bubble Eye Goldfish can be a rewarding and enjoyable experience with the right knowledge and tools. The unique considerations for this breed make it an interesting addition to any aquarium. What are your thoughts on Bubble Eye Goldfish care? Leave a comment below.

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