The Ultimate Guide to Fantail Goldfish:  From Tank Setup to Feeding Habits

Fantail goldfish are a type of fancy goldfish that are known for their unique appearance and captivating personality. These fish are easily recognized by their double tail and rounded body shape, which gives them a distinctive look that many people find appealing.

But owning a fantail goldfish requires a certain level of care and attention to ensure their well-being. From setting up the perfect tank to understanding their feeding habits, there is much to learn about these fascinating creatures.

That’s why I’ve created the ultimate guide to provide a comprehensive resource to learn everything from setting up the perfect tank to understanding their feeding habits. If you’re thinking about getting a fantail goldfish, read on to learn everything you need to know about them!

Some Basic Information on Fantail Goldfish!

Fantail goldfish have been domesticated for centuries and are one of the most commonly kept fish in home aquariums. Their popularity is due to several factors. Firstly, they are hardy and can adapt to a wide range of water conditions. This makes them ideal for beginner fishkeepers who may be new to the hobby. Here are some basic information on them:


The exact origin of Fantail Goldfish is not entirely clear, but it is believed that they were developed in China during the Tang Dynasty (618-907 AD). They were originally bred from common carp, which were selectively bred for their unique physical characteristics, such as their double tail and rounded body shape.

Over time, breeders began to focus on developing different colors and patterns in these Goldfish, leading to the wide variety of colors we see today.


The Fantail goldfish is a popular ornamental fish with an oval-shaped body and a distinctive long, flowing tail. Its unique physical features and vibrant coloration make it a beautiful addition to any aquarium. They come in various colors, including orange, red, white, and black.

Size & Lifespan

These goldfish typically grow about 6-8 inches long. They can live for 10-15 years with proper care. Keeping them in pairs or groups is best since they are social creatures.


Fantail goldfish are generally peaceful fish but can be nippy towards other tank mates if they feel threatened or crowded. It is best to keep them with other calm fish, such as danios or platies.

How to set up a Tank for Fantail Goldfish?

One of the most important factors in ensuring the health and well-being of your Fantail Goldfish is setting up the right tank. Here are some key factors to consider when setting up a tank for your Fantail Goldfish:

Choose the Right-Sized Tank

These Goldfish require a lot of swimming space, so it is important to choose a large enough tank to accommodate them. A good rule of thumb is to have at least 20 gallons of water for one Fantail Goldfish, with an additional 10 gallons for each additional fish.

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A good filter is essential for maintaining good water quality in your Fantail Goldfish tank. It helps to remove excess food, waste, and other debris and keeps the water clean and healthy for your fish.


Fantail Goldfish prefer water temperatures between 68-75°F, so a heater is necessary to maintain a consistent temperature in the tank.


This criterion is not strictly necessary for Fantail Goldfish, but it can help to promote their natural behaviors and encourage plant growth in the tank.


A good substrate can help to keep the tank clean and provide a natural environment for your Fantail Goldfish. Sand or gravel are good options.

Water Conditions

As mentioned above, Fantail Goldfish prefer water temperatures between 68-75°F. The ideal pH level for Fantail Goldfish is between 7.0-7.5. Also, they prefer water with moderate to high hardness levels (around 150-300 ppm).

Water Changes

Regular water changes are essential for maintaining good water quality in your Fantail Goldfish tank. Aim to change around 20% of the water in the tank every week to keep the water clean and healthy for your fish.

How to Choose the Right Food for Fantail Goldfish?

Proper nutrition is essential for the health and well-being of your Fantail Goldfish. Here are some important factors to consider when choosing the right food for your fish:

Nutritional Needs of Fantail Goldfish

Fantail Goldfish are omnivorous, requiring a balanced diet that includes both plant and animal matter. They need a diet high in protein, fiber, vitamins, and minerals to support their growth and overall health.

Types of Food

  • Pellets – These are popular for feeding Fantail Goldfish because they are easy to digest and provide a balanced diet. Look for pellets that are specifically formulated for goldfish and contain high-quality ingredients.
  • Flakes – Flakes are another popular option for feeding Fantail Goldfish. They come in various formulas and can be a good source of nutrition, but can also contribute to water pollution if overfed.
  • Live food – Fantail Goldfish enjoy live foods such as brine shrimp, bloodworms, and daphnia. These foods are a good protein source and can enrich your fish.

Feeding Routine

They should be fed 2-3 times daily, with only as much food as they can consume in a few minutes. Overfeeding can lead to health problems and water pollution, so monitoring your fish and adjusting feeding is crucial.

Maintaining the Health of Fantail Goldfish

Keeping your Fantail Goldfish healthy is essential for their long-term well-being. Here are some important things to keep in mind when maintaining the health of your fish:

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Signs of a Healthy Fantail Goldfish

A healthy Fantail Goldfish should have bright, clear eyes, smooth and shiny scales, and be active and alert. They should be swimming usually and breathing easily, with no signs of gasping or struggling to breathe.

Common Diseases and Health Issues

Fantail Goldfish are prone to several health issues and diseases, including swim bladder disorder, fin rot, and ich. These can be caused by poor water quality, overfeeding, and other environmental factors. Symptoms can include lethargy, loss of appetite, and physical changes such as discoloration or frayed fins.

Prevention and Treating Diseases

The best way to prevent diseases in Fantail Goldfish is to maintain good water quality and provide a healthy and balanced diet. Regular water changes and proper filtration are essential for maintaining good water quality.

If your Fantail Goldfish does develop a health issue, prompt treatment is essential. This can include medication, water changes, and adjustments to the tank environment.

Breeding and Caring for Baby Fantail Goldfish

Breeding Fantail Goldfish can be a rewarding experience for aquarium enthusiasts. Here are some essential things to keep in mind when breeding and caring for baby Fantail Goldfish:

The Breeding Process

Fantail Goldfish are egg layers, which means that they lay eggs that are fertilized externally. To breed Fantail Goldfish, you will need male and female fish that are healthy and mature.

The breeding process involves courtship behavior, during which the male will chase the female and nudge her abdomen to stimulate egg production. Once the eggs are laid, the male will fertilize them, and the eggs will hatch in 3-5 days.

Caring For Baby Fantail Goldfish

  • Tank setup – Baby Fantail Goldfish require a tank with clean, well-filtered water and plenty of hiding places. A separate breeding tank is recommended to prevent the parents from eating the eggs or newly hatched fry. The temperature should be kept between 75-80°F to encourage healthy growth.
  • Feeding – Baby Fantail Goldfish should be fed small, frequent meals of high-quality food such as brine shrimp or finely crushed flakes. It is crucial not to overfeed, as this can lead to poor water quality and health issues.


Fantail Goldfish is a popular and rewarding addition to any aquarium. You can ensure their health and happiness by providing them with a suitable environment and a well-balanced diet.

With this ultimate guide, you should be equipped with the knowledge to set up a comfortable tank for your Fantail Goldfish and cater to their specific needs. Remember to constantly monitor their behavior and make adjustments accordingly to keep them thriving.

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