The Fish Guru

Unleashing the Beauty and Wonder of the Fantail Goldfish

Versatile, colorful, and majestic the Fantail Goldfish is a popular choice among aquarium enthusiasts worldwide. With its distinctive double-tail and round body, this elegant fish is a true delight to watch in action.

In this article, well delve into some essential information about the Fantail Goldfish that every aquarist should know.

Overview of Fantail Goldfish

Fantail Goldfish are a breed of ornamental fish that possess vibrant colors and metallic scales. With their unique double-tail and round body, they look like a floating work of art.

These magnificent fish are available in a range of reds, oranges, and other colors, making them a stunning addition to any aquarium.

Size and Lifespan

The size of Fantail Goldfish can vary between 6-8 inches when fully grown, making them a perfect fit for medium to large aquarium tanks. They can live up to 7-10 years, provided they are given optimal care and a suitable environment to thrive.

Temperament and Tankmates

Fantail Goldfish are passive, friendly, and gregarious by nature, making them an excellent choice for community tanks. They go well with other breeds of Goldfish, such as Lionheads, Orandas, Pearlscales, Ranchus, Ryukins, and Veiltails, among others.

Its best to avoid keeping them with aggressive or fast-moving species, such as Cichlids or Bettas.

Natural Habitat and Origin

The origin of all Goldfish can be traced not to nature, but to selective breeding by humans. The first Goldfish were recorded in the Tang Dynasty in China about 1000 years ago.

Since then, they were selectively bred until their unique varieties were created. Fantail Goldfish were developed from common Goldfish by a selective breeding process that started in China in the early 1900s.

History of Fantail Goldfish

The first documented record of Fantail Goldfish was in records of ornamental fish competitions held in China. During the Song Dynasty, some aristocrats were keeping these fish as a status symbol in their backyard ponds.

Later, these fish became popular in Europe in the 1800s, and over time, different unique varieties were created through selective breeding.

Keeping Fantail Goldfish

Fantail Goldfish require a clean and aerated aquarium with a suitable filtration system to maintain optimal water quality. A large and spacious tank with plants and rocks for hiding is necessary, ensuring space for swimming and moving around at ease.

Maintaining optimal water temperature around 65 to 72 degrees and feeding them a balanced diet of high-quality flakes and pellets will help them stay happy and healthy.

Health Concerns

Fantail Goldfish can develop several health problems, such as Swim Bladder Disease, Dropsy, and Ich, to name a few. Careful attention must be given to the water quality, cleanliness, and diet for optimal health.

Ensuring the correct water temperature, oxygenation, and using specialized Goldfish remedies can help control and prevent such diseases arising.

Breeding Fantail Goldfish

If you plan to breed your Fantail Goldfish, you must have a deep understanding of the selective breeding process. First, you need to ensure a healthy and mature pair of fish.

Later, you can follow certain steps in breeding, feeding the fry, and rearing the fish.


The Fantail Goldfish is a beautiful, elegant, and friendly addition to any home aquarium. Understanding the basic information about this breed and providing optimal care can help them live long, healthy lives.

With their unique features and vibrant colors, they are sure to brighten up any aquarium. Setting up a home aquarium for your Fantail Goldfish can be a fulfilling and rewarding experience.

With the right equipment, tank setup, and maintenance, you can provide your fish with a healthy environment to thrive. In this section, well guide you through the necessary equipment, tank setup, and water parameters required to keep your Fantail Goldfish happy and healthy.

Tank Size and Substrate

One crucial factor to consider when setting up an aquarium for your Fantail Goldfish is the tank size. As a general rule, you need a minimum of 25 gallons of water per fish.

This size allows for sufficient swimming space and ensures optimal water quality. When selecting the substrate for your tank, consider using fine gravel or sand.

Avoid large gravel that can damage your fish’s delicate fins and scales.

Plants and Decorations

Adding plants and decorations to your Fantail Goldfish tank is an excellent way to create a natural environment and enhance their well-being. Live plants such as Anubias, Windelove, and African fern can provide hiding places and natural areas for your fish to explore.

You can use ceramic aquarium pots, artificial plants, and smooth stones as aquatic decorations. Make sure to avoid sharp, rough, or pointy objects that can harm your fish.


The equipment you choose for your Fantail Goldfish tank can make all the difference in maintaining optimal water quality. A canister filter such as the OASE Indoor Aquatics Biomaster Thermo 250 or a sump filter can help keep the water clean and clear.

Mounting a thermometer and heater can help regulate the water temperature, maintain optimal levels between 70-75F (21.1 to 23.8C). Installing a UV sterilizer can help prevent the build-up of harmful bacteria, algae, and parasites.

Water Parameters and Maintenance

The quality of the water in your Fantail Goldfish tank is an essential factor in maintaining their health and well-being. Regularly checking and maintaining the correct water parameters is crucial.

Here are some water parameters to consider:

Water Hardness and pH

Fantail Goldfish thrive in water with a hardness between 5-19 dGH and pH levels between 5.0 to 8.0. Test kits are an easy way to check the water hardness and pH levels in your tank.

Water Temperature

Maintaining the correct water temperature is crucial for the health and well-being of your fish. Keep the temperature between 70-75F (21.1 to 23.8C) using heating equipment, especially during colder months.

Water Changes

Water changes are an essential part of maintaining optimal water conditions in your Fantail Goldfish tank. We recommend a partial water change of 10% on weekdays and 30% on Saturdays.

Adding a water conditioner such as Prime from Seachem and Fritz Aquatics Nitrifying Bacteria can help reduce the stress on your fish and improve water quality.

In Summary

Setting up a home aquarium for your Fantail Goldfish requires careful planning and knowledge of their requirements. A well-equipped, clean, and appropriately sized tank with suitable plants and decorations can help provide your fish with a healthy environment.

Attention to water parameters, regular maintenance and water changes can ensure optimal water conditions for your fish to thrive. Feeding your Fantail Goldfish a balanced diet is essential for their overall health and well-being.

This section will provide an in-depth guide on the dietary needs of the Fantail Goldfish. Additionally, well delve into the breeding process, male and female identification, and setting up a breeding tank.

Diet and Feeding

Fantail Goldfish are omnivorous and require a well-balanced diet that contains both protein and fiber. A proper diet is essential for the maintenance of their vibrant coloration, healthy growth, and overall well-being.

Feeding your fish steamed eggs, which are rich in protein, can help ensure healthy growth. To provide sufficient fiber to their diet, you should feed your fish a range of vegetables such as zucchini, peas, carrots, lettuce, and spinach.

Freeze-dried krill and bloodworms are excellent sources of high-quality protein and can be fed to your fish occasionally.

Feeding Frequency

It is essential to feed your Fantail Goldfish multiple times a day for optimal health. Feeding 4-5 times a day, in small quantities, is recommended.

Overfeeding can cause health problems such as swim bladder disease and obesity in your fish. It is best to monitor their feeding habits closely and adjust their diet accordingly.


Breeding your Fantail Goldfish requires careful attention to their needs, specifically regarding temperature, space, and feeding. Here are some essential points to consider:

Male and Female Identification

To accurately identify male and female Fantail Goldfish, look for the genital papilla located near the fish’s anal opening. Female papillae are rounder and more prominent, while the males papillae appear less prominent and pointed.

Age to Breed and Setting Up a

Breeding Tank

The ideal breeding age for Fantail Goldfish is between five months to one year old. To set up a breeding tank, you’ll need a minimum tank size of 20 gallons.

Plants such as Cabomba and Hornwort can provide hiding places and egg sites. Additionally, for a successful breeding process make sure your breeding tank has artificial breeding grass, methylene blue, and a sponge filter.

Easiest Way to Breed a Fantail Goldfish

Breeding Fantail Goldfish can be a rewarding experience if done correctly. To successfully breed your fish, it’s crucial to condition your fish first.

Provide your fish with a healthy diet of live food such as daphnia, baby brine shrimp, homemade steamed eggs, and spirulina powder. Warm temperatures between 74-82F (23-28C) are ideal for breeding.

It is recommended that you perform a 100% water change before introducing your male-female pair into the breeding tank. A sponge filter can prevent harm to eggs or hatchlings by preventing them from being sucked into the filter.

In Summary

Providing your Fantail Goldfish with a balanced diet and feeding frequency is essential for their overall health. Feeding them steamed eggs, vegetables, and high-quality protein sources are ideal for sustainable growth.

Breeding your Fantail Goldfish requires careful attention to their needs, specifically regarding temperature, space, and feeding. By conditioning your fish and setting up a breeding tank with the correct plants and equipment, it is possible to breed your Fantail Goldfish successfully.

Maintaining a healthy environment for your Fantail Goldfish is essential for their overall well-being. However, even with proper care and attention, goldfish can develop various health problems, including fin rot, fungal, and bacterial infections.

In this section, well provide an in-depth guide to common health problems in Fantail Goldfish and ways to treat them.

Fin Rot

Fin rot is a common health problem in fish. It occurs when the tail, fins, or other tissues of the fish begin to decay.

The primary cause of fin rot is poor water quality, which can lead to bacterial infections. Additionally, fin rot can be caused by contagious diseases, mishandling, injuries, and nipping/bullying behaviors in community aquariums.

Symptoms of fin rot include frayed, ragged, or decaying fins, discolored or opaque patches, and loss of appetite. Treating

Fin Rot:

Treating fin rot requires immediate diagnosis and action to prevent the infection from spreading.

Firstly, regularly maintain optimal water quality in your aquarium by performing weekly water changes and monitoring the water parameters. A well-maintained filtration system and the addition of aquarium-safe antibiotics can also help treat this infection.

Tonic salt, aquarium-safe salt, is a natural way to prevent further infections and promote healing. However, it should not be used for longer than ten days.

If the infection persists, it is best to consult with a qualified veterinarian for professional treatment.

Fungal and Bacterial Infections

Fungal and bacterial infections can be caused by fungi, bacteria, and other microorganisms that can invade the fish’s body through open wounds or cuts. These infections can cause a range of symptoms, including loss of appetite, lethargy, and discoloration or ulcers on the skin.

Preventative Measures:

Preventative measures such as consistent aquarium maintenance, providing a healthy diet, and avoiding overcrowding can prevent fungal and bacterial infections. Avoid overfeeding and poor water quality, which can increase the potential for harmful bacterial and fungal growth.

Regularly clean and monitor the tank for any sign of abnormality, and perform water changes as necessary.


Fungal and Bacterial Infections:

If you suspect your Fantail Goldfish has a fungal or bacterial infection, take immediate action.

Begin by isolating the affected fish to prevent the spread of the infection. Perform a water change and increase the aeration in the tank.

Over-the-counter antifungal treatments can be used to treat fungal infections, but it is essential to read the instructions and follow them precisely. For bacterial infections, aquarium-safe antibiotics can help to control the spread of the bacteria.

Consult with a qualified veterinarian for professional treatment if the symptoms persist.

In Summary

Maintaining optimal water quality and addressing health concerns as soon as they arise is vital to ensure the health and well-being of your Fantail Goldfish. Fin rot and fungal and bacterial infections are common health problems in goldfish.

Proper diagnosis, early detection, and prompt treatment can effectively cure these health issues. Maintaining consistent aquarium maintenance, feeding a healthy diet, and avoiding overcrowding can also prevent these health issues from occurring, ensuring the ongoing health of your Fantail Goldfish.

In summary, providing a healthy environment for your Fantail Goldfish is essential to ensure their well-being. Key points to consider when caring for your goldfish include tank setup and equipment, feeding and diet, breeding, and dealing with common health problems.

Maintaining optimal water quality, providing a balanced diet, and preventing overcrowding can prevent and treat many health problems. By taking appropriate care of your Fantail Goldfish, you can enjoy their vibrant colors, unique features, and friendly personalities for years to come.

Remember, healthy fish equal happy owners.

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