Bubble Eye Goldfish Care Guide: Tips for a Happy, Healthy Pet

Bubble Eye Goldfish are truly a sight to behold, with their signature oversized “bubbles” beneath their eyes. You might have come across them and decided you’d like one of these fascinating creatures swimming around in your own tank. Well, you’re in luck because this article is all about helping you provide the ideal care for your Bubble Eye Goldfish.

These aquatic oddities have been bred over generations for their unique appearance, making them an increasingly popular choice for fish enthusiasts seeking to diversify their aquatic collection. In the following care guide, you’ll find everything you need to know about tank size, water parameters, diet, and more, helping you create a haven for your goldfish.

So, let’s dive in and explore the captivating world of Bubble Eye Goldfish care. With the right knowledge and guidance, you’ll soon have a thriving, happy, and healthy fish to call your own.

Species Overview

Bubble Eye Goldfish are unique fish characterized by their protruding eyes that resemble fluid-filled bubbles. These fascinating creatures require proper care to ensure they thrive in a captive environment. Here, we will present an overview of their characteristics and a table summarizing their basic care requirements.

These fish have been selectively bred for generations to achieve their remarkable appearance, and they’re an excellent choice for aquarium hobbyists looking for something a little different. Bubble Eye Goldfish can live for 6 to 15 years if well taken care of, and their distinctive appearance makes them stand out in any aquarium collection. Given their delicate eye structures, there is a fair amount of concern for their welfare and wellbeing within the aquarium community. Caring for these fish requires attention to detail and a commitment to providing a safe and comfortable environment.

To help you better understand the Bubble Eye Goldfish requirements, here’s a handy table including the properties mentioned in your request:

Property Information
Scientific name Carassius auratus
Common names Bubble Eye Goldfish
Distribution Aquarium species
Size 6 inches
Lifespan 6 to 15 years
Diet Omnivore
Temperament Peaceful
Minimum tank size 20 gallons
Temperature 65-72°F (18-22°C)
pH 6.8-7.6
Water hardness 5-19 dGH
Care level Moderate
Filtration/Water Flow Gentle
Water type Freshwater
Breeding Egg layer
Breeding difficulty Moderate
Compatibility Compatible with other non-aggressive fish

Now that you have the necessary information about the species, you can more confidently care for these captivating creatures in your aquarium. Remember to always monitor and maintain the water quality, provide a well-balanced diet, and ensure a safe environment to help your Bubble Eye Goldfish live a long and healthy life.

Origins and Natural Habitat

Bubble Eye Goldfish have an interesting history, originating in China. Their unique appearance sets them apart from other goldfish varieties, making them quite popular among aquarium enthusiasts. Developing their distinct look only in the early twentieth century, these fascinating fish are relatively recent additions to the goldfish family.

In their natural habitat, Bubble Eye Goldfish thrive in freshwater environments. They have been selectively bred to enhance their striking features, such as the bubble-like sacs under their eyes. Although their origins can be traced back to China, the popularity of these fish has spread to other countries in and outside of Asia.

As you start to include Bubble Eye Goldfish in your aquarium, it’s important to understand their needs and preferences. Remember, these delicate creatures require special care compared to more common goldfish types. Recreate a comfortable environment for them by:

  • Providing ample swimming space in the aquarium
  • Ensuring water quality and conditions like temperature and pH levels
  • Avoiding sharp or abrasive decorations that may harm their unique eye sacs

By taking the time to learn about the Bubble Eye Goldfish’s history and natural habitat, you can better appreciate their fascinating evolution and provide the best care for these captivating creatures in your aquarium.

Physical Characteristics

Size and Shape

The Bubble Eye Goldfish is a small and unique variety of Fancy Goldfish. You’ll notice that they have two large fluid-filled sacs under their eyes, giving them a truly distinctive appearance. These goldfish have a round body shape, and they typically grow up to 6 inches long. Keep in mind, Bubble Eye Goldfish are slow swimmers due to their delicate eye structures, making them prone to injuries.

Color and Markings

Bubble Eye Goldfish come in a variety of colors, including red, orange, calico, white, and bi-color combinations. Their bright, vibrant shades make them visually appealing and a pleasure to watch in your aquarium. When it comes to markings, these fish can present a solid color or a combination of colors in various patterns. Each Bubble Eye Goldfish is unique, and their physical characteristics can change as they grow and age. Remember to give them the appropriate care, as proper care can enhance their colors and overall health.

Lifespan and Growth Rate

Bubble Eye Goldfish have a fascinating lifespan, living for quite a few years if given the right care and environment. On average, these unique fish can live for 10-15 years. However, it’s essential for you, as the owner, to provide optimal conditions to promote a healthy, long life.

For your Bubble Eye Goldfish to grow at a steady rate, pay close attention to their diet. Feeding them high-quality and nutritious food, such as flakes or pellets specifically formulated for goldfish, is crucial. You can also supplement their diet with treats like brine shrimp, blood worms, and vegetables to keep it well-rounded. Make sure to feed them just enough to satisfy their hunger and help with growth, but be careful not to overfeed them.

Just as important as diet, maintaining the right water parameters in your tank can impact the growth and overall health of your Bubble Eye Goldfish. Keep the water temperature within the 65-75°F (18-24°C) range, with a pH level between 6.5 and 8. This helps ensure that conditions inside the tank remain favorable for the proper growth and development of your goldfish.

Lastly, don’t forget to give them plenty of space! A spacious tank allows your Bubble Eye Goldfish to grow to their full potential. A minimum 20-gallon tank is often recommended for one fish, but bigger is always better. Remember, the health and growth of your goldfish depend on the environment you provide.

By following these suggestions, you’ll be well on your way to providing a happy, healthy environment for your Bubble Eye Goldfish to thrive, ensuring a long lifespan and steady growth rate.

Diet and Feeding

Feeding your Bubble Eye Goldfish a healthy and balanced diet is essential for their overall well-being. Providing a variety of foods will not only keep them interested in what they’re eating but also help them maintain their unique appearance and vibrant colors.

Start by offering high-quality goldfish pellets or flakes as the base of their diet. Choose those that are specially formulated for goldfish, as they will contain the right balance of nutrients your fish need. Feed them a small amount two to three times a day, being careful not to overfeed. Overfeeding can lead to poor water quality and health issues for your fish.

In addition to pellets or flakes, you can also provide occasional treats like live or frozen foods. Some options you can consider include brine shrimp, daphnia, and bloodworms. These offer essential proteins, vitamins, and minerals that will benefit your Bubble Eye Goldfish’s health. However, only offer these treats a few times a week, as they should not make up the majority of their diet.

Adding a small amount of fresh vegetables, such as blanched peas, spinach, or lettuce, to your Bubble Eye Goldfish’s diet can also be beneficial. These provide important vitamins, minerals, and fiber that promote good digestive health. Be sure to chop or shred the vegetables into small pieces that your fish can easily swallow.

Remember to keep an eye on the consumption of your Bubble Eye Goldfish during feeding times. If you notice any uneaten food, remove it from the tank to prevent it from spoiling and affecting water quality. By carefully monitoring your goldfish’s dietary intake and providing a balanced mix of foods, you’ll help ensure they stay healthy and thrive in your aquarium.

Behavior and Temperament

Bubble Eye Goldfish are known for their peaceful and social nature. They enjoy swimming in the company of other fish with similar size and temperament. As a friendly fish, they can easily adapt to living with other Fancy Goldfish varieties, like telescope goldfish or black moors.

When it comes to swimming, these goldfish may appear slow and awkward due to the large sacs beneath their eyes. This makes them somewhat vulnerable, so it’s crucial to monitor the fish tank environment and prevent any sharp objects or aggressive tank mates that could damage their delicate eye sacs.

Feeding your Bubble Eye Goldfish might require some patience since their unique eye sacs can make eating a challenging process for them. To help your fish thrive, try feeding them sinking pellets so they can access the food at the bottom of the tank.

In summary, maintaining a peaceful and safe environment for your Bubble Eye Goldfish is key to ensuring their well-being. Be mindful of their unique features when setting up the tank and selecting tank mates, and enjoy the friendly and sociable companionship these charming goldfish can provide.

Care and Tank Requirements

Caring for Bubble Eye Goldfish requires attention to their unique needs and proper tank setup. In this section, we’ll discuss tank size, water parameters, tank setup and decorations, as well as filtration and aeration.

Tank Size

Bubble Eye Goldfish need a spacious tank to accommodate their growth and waste production. Start with a 30-gallon (114 liters) tank for one fish, and add an extra 10 gallons (38 liters) of space for each additional goldfish you keep. Remember, bigger is always better!

Water Parameters (Temperature and pH)

To create a healthy environment for your Bubble Eye Goldfish, maintain the following water conditions:

  • Temperature: Keep the water temperature between 65-75°F (18-24°C).
  • pH level: Maintain a pH range of 6.5 to 8.0 for optimal fish health.

Tank Setup and Decorations

When setting up your Bubble Eye Goldfish tank, consider their delicate eye sacs:

  • Substrate: Choose a smooth substrate, such as fine sand or gravel to prevent damage to the fish.
  • Decorations: Use smooth, round decorations and avoid sharp edges. Live or silk plants offer hiding spots without harming their eye sacs.
  • Swimming Space: Ensure the tank has ample open space for your goldfish to swim freely.

Filtration and Aeration

Proper filtration and aeration are essential for maintaining a clean, oxygen-rich environment:

  • Filtration: Bubble Eye Goldfish produce a lot of waste, so choose a powerful filter capable of handling the tank’s size. A canister or hang-on-the-back filter works well.
  • Aeration: Provide sufficient aeration by using air stones or sponge filters to promote oxygen exchange and help maintain water quality.

By following these guidelines, you can create a comfortable and safe home for your Bubble Eye Goldfish.

Suitable Tank Mates

When choosing tank mates for your Bubble Eye Goldfish, it’s important to consider species that have a peaceful temperament, since the Bubble Eye Goldfish itself is a peaceful fish. Moreover, avoid pairing them with fish that are much faster and more aggressive – these types of fish could end up stealing their food and causing stress.

Here are some suitable tank mates for your Bubble Eye Goldfish:

  • Other Goldfish Varieties: Many fancy goldfish varieties, such as Ryukin, Oranda, and Black Moor, can make great companions for your Bubble Eye. Just make sure to avoid goldfish species that are significantly larger or more aggressive.
  • White Cloud Mountain Minnows: These small, peaceful fish will easily coexist with your Bubble Eye Goldfish. They are hardy and adaptable, making them an ideal tank mate.
  • Zebra Danios: With their peaceful nature and similar water condition requirements, Zebra Danios can get along well with Bubble Eye Goldfish. Be aware that they’re quick swimmers, so make sure there’s enough food for both species in the tank.
  • Mystery Snails: These snails are not only harmless to your Bubble Eye Goldfish, but they also help keep the tank clean by feeding on algae and detritus.

When selecting tank mates, it’s always essential to research their compatibility, as well as their specific care requirements. This will ensure a harmonious and healthy environment in your aquarium. Remember to also take into account the size of your tank, as overcrowding can lead to poor water quality and stress for your fish.

Breeding Process

Breeding Bubble Eye Goldfish can be an exciting experience, and with proper care and preparation, you can successfully raise a new generation of these unique fish. Start by setting up a separate breeding tank with a 20 to 30-gallon capacity. Ensure that the water parameters are stable, with a temperature of 68-74°F and a pH level between 7.0 and 7.5.

Place a group of healthy adult Bubble Eye Goldfish (both males and females) in the breeding tank. To encourage spawning, gradually increase the water temperature up to 74°F over a few days. Provide a balanced diet of high-quality flake food, live brine shrimp, and vegetable matter to promote good health and optimal breeding conditions.

Bubble Eye Goldfish typically spawn in the early morning hours, and you may observe courting behavior such as the male chasing the female. When the female is ready to lay her eggs, she will scatter them on the plants or spawning mop in the tank. The male will then fertilize the eggs by swimming nearby and releasing his milt. It’s vital to remove the adult fish from the breeding tank at this point, as they may consume the eggs.

The fertilized eggs will hatch within four to seven days, and the fry will be tiny and translucent. At first, they will feed on their yolk sac, but after that’s depleted, you can start feeding them with commercially available liquid fry food or infusoria. As they grow, gradually introduce them to crushed flakes and other appropriate foods.

Monitor the water quality closely during this time. Perform regular water changes of 10-15%, ensuring the new water matches the temperature and pH of the tank. This will help maintain a clean environment and reduce the risk of disease or deformities in the developing fry.

As your Bubble Eye Goldfish fry grow, you may notice variations in their eye sacs and other physical features. Not all the fry will develop the characteristic bubble appearance. It’s essential to maintain proper care and attention to their needs throughout this critical stage of their development. Good luck in your breeding endeavor, and enjoy the fascinating world of Bubble Eye Goldfish!

Common Diseases and Treatments

Bubble Eye Goldfish are prone to certain diseases, but many of them can be treated and prevented with proper care. In this section, we will discuss some common diseases and their treatments.

Ich: Ich, also known as white spot disease, is caused by a parasite. Signs of Ich include small white spots on your Bubble Eye Goldfish’s body and fins. To treat Ich, gradually raise the water temperature to 86°F (30°C) for a few days and add aquarium salt. Maintain good water quality to prevent Ich from recurring.

Fin Rot: Fin rot is a bacterial infection that causes the edges of your fish’s fins to turn white and become frayed. Keep the water clean, and treat the infection using aquarium antibiotics specifically designed to treat fin rot, following the manufacturer’s instructions.

Buoyancy Disorders: Bubble Eye Goldfish are prone to buoyancy disorders due to their unique anatomy, which can lead to difficulty swimming or even staying upright. Feeding your fish a high-quality, balanced diet and avoiding overfeeding can help prevent buoyancy issues. If your fish is experiencing buoyancy problems, consult a veterinarian who specializes in aquatic animals.

Pests and Parasites: Bubble Eye Goldfish can be affected by external parasites like anchor worms and lice. These parasites will latch onto your fish and cause them discomfort or ill health. Use aquarium-safe treatments, such as malachite green or potassium permanganate, to combat these pests, following the product instructions closely.

Preventing diseases in your Bubble Eye Goldfish involves maintaining a clean and stable living environment. Perform regular water changes, keep the water parameters within the ideal range, and feed your fish a nutritious and varied diet. By following these guidelines, you can minimize the risk of diseases and help your Bubble Eye Goldfish thrive.

Frequently Asked Questions

What is the recommended tank size for Bubble Eye Goldfish?

A 20-gallon tank is the absolute minimum for a single Bubble Eye Goldfish, but a 30-gallon tank will provide more space for your fish to grow and explore. If you plan to keep more than one of these goldfish, add an additional 10-20 gallons of water per fish. It’s important to give your Bubble Eye Goldfish plenty of room, as cramped conditions can increase stress and the likelihood of health problems.

What tank mates are compatible with Bubble Eye Goldfish?

Bubble Eye Goldfish are delicate and slow swimmers, so it’s best to pair them with other gentle, non-aggressive fish that won’t outcompete them for food. Some compatible tank mates include other fancy goldfish varieties, kuhli loaches, white cloud mountain minnows, and Corydoras catfish. Avoid fast-swimming or nippy fish like tiger barbs or common goldfish, as they may stress or even injure your Bubble Eye Goldfish.

How long does a Bubble Eye Goldfish typically live in captivity?

In a well-maintained aquarium, Bubble Eye Goldfish can live for 10-15 years. However, their lifespan depends on factors such as water quality, diet, and overall care. Regular water changes, a varied and high-quality diet, and proper tank setup will help ensure that your Bubble Eye Goldfish lives a long and healthy life.

How to handle a popped sac in Bubble Eye Goldfish?

A popped sac in a Bubble Eye Goldfish can be a cause for concern, but it’s important to remain calm and take appropriate action. First, assess the damage and make sure there are no sharp objects or surfaces in the tank that can cause further injury. Gently net your fish and place it in a quarantine tank with clean, treated water. Add some aquarium salt as directed and monitor the fish closely. The sac should heal on its own, though it might not inflate to its previous size. If you notice any signs of infection, consult a veterinarian or aquatic specialist for further assistance.

Are Bubble Eye Goldfish naturally occurring species?

Bubble Eye Goldfish are not found in the wild; they are a selectively bred variant of the common goldfish, developed over many generations to exhibit the distinctive “bubble” under each eye. Their unique appearance makes them a popular choice for aquarium hobbyists looking for something a little different, but it’s important to remember that their delicate features require extra care and attention to thrive in captivity.


Caring for Bubble Eye Goldfish can be a rewarding experience when you follow the essential guidelines. Remember to provide them with a clean, well-maintained, and spacious aquarium with proper filtration. Monitor their water conditions to avoid harmful fluctuations, and feed them a balanced diet to ensure optimal health.

While Bubble Eye Goldfish may require a bit more attention, their unique appearance and fascinating personalities make them well worth the effort. Just be patient and dedicated to their care, and you’ll be able to enjoy a thriving and captivating aquatic display.

To recap, Bubble Eye Goldfish are an interesting, attractive freshwater species that garner attention from aquarium enthusiasts. They require proper care for their well-being, which includes maintaining their water conditions, feeding them a balanced diet, and staying vigilant for any signs of health issues. With patience, dedication, and a friendly attitude, you are sure to have a truly rewarding experience caring for these fascinating fish.