Jikin Goldfish Comprehensive Care Guide (2024)

Jikin Goldfish in a Planted Tank
Dr. Mollie Newton
Published by Dr. Mollie Newton PHD| Senior Editor
Last updated: July 2, 2024
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Explore the captivating world of aquatic pets with a focus on the Jikin goldfish, a rare breed known for its vivid colors and distinctive features. This cherished aquarium resident dazzles with its elegant fins and shimmering metallic scales, enchanting every enthusiast. Regardless of your experience, whether you are an experienced fish owner or a beginner, our concise guide offers valuable insights and practical tips for effectively caring for these enchanting creatures in your home. Immerse yourself in the allure of the Jikin goldfish and begin an exciting journey into the aquatic realm!

Article Summary

  • First bred in Japan during the Edo period, Jikin goldfish have gained global popularity and can be found in aquariums and ponds worldwide.
  • Jikin goldfish have a distinctive peacock tail, an elongated body, and come in various colors, including red, white, black, blue, and orange.
  • Jikins are generally peaceful and suitable for community tanks. Compatible tank mates include common goldfish, comet goldfish, white cloud mountain minnows, and rosy red minnows.

Species Overview

The Jikin goldfish, scientifically known as Carassius auratus, belongs to the family Cyprinidae. This stunning fish is commonly referred to as the “Jikin” or “Peacock Tail” goldfish due to its unique and vibrant peacock tail shape.

Origin & Distribution

Originally from Japan, the Jikin goldfish has gained popularity worldwide due to its captivating appearance. It was first bred during the Edo period in Japan and quickly became a favorite among goldfish enthusiasts. Nowadays, you can find Jikin goldfish in aquariums and ponds all around the globe.

Physical Characteristics

With its white body and its distinct peacock tail, the Jikin goldfish stands out among other goldfish varieties. Its long, flowing double tail resembles a beautiful fan of peacock tail feathers. The body of this fish is elongated and slender, giving it an elegant appearance.

The coloration of the Jikin goldfish can vary greatly. It comes in a wide range of hues including red, white, black, blue, and orange. Some individuals even exhibit a combination of these colors on their bodies and fins.

Size, Growth Rate & Lifespan

When fully grown, the Jikin goldfish typically reaches a size of about 6-8 inches (15-20 cm) in length. However, with proper care and optimal conditions such as spacious tanks or ponds with high-quality water parameters, some specimens may grow even larger.

In terms of growth rate, Jikin goldfish are considered moderate growers compared to other types of fancy goldfish. Their growth rate depends on various factors such as diet, water quality, and genetics.

As for their lifespan, well-maintained Jikins can live up to 10 years or more when provided with suitable living conditions and proper care. However, it’s important to note that individual lifespans can vary depending on factors such as genetics, diet, and overall health.

Habitat & Tank Conditions

Jikin goldfish, known for their unique appearance and graceful swimming, require a spacious tank to thrive.

Tank Size & Set Up

A minimum tank size of 20 gallons is recommended for a single Jikin goldfish. However, if you plan on keeping multiple Jikins, it’s crucial to provide at least 10 gallons per fish to ensure they have ample space to swim around comfortably.

When setting up the tank for your Jikin goldfish, consider providing a variety of hiding spots and open areas for them to explore. Adding live or artificial plants can create a more natural environment and offer places for your fish to take cover. Incorporating rocks or driftwood can provide interesting features in the tank while also mimicking their natural habitat.

Woman Placing Empty Aquarium On The Table
Carefully consider the Jikin’s tank size and how many you plan to keep.

Water Parameters

Maintaining proper water parameters is essential for the health and well-being of your Jikin goldfish. They prefer slightly alkaline water with a pH level between 7.2 and 7.6. It’s important to regularly monitor the pH level using a reliable test kit and make any necessary adjustments.

Jikins thrive in water temperatures ranging from 65°F to 75°F (18°C – 24°C). To ensure optimal conditions, use an aquarium heater or chiller depending on the ambient temperature of the room where the tank is located.

Proper filtration is crucial in maintaining clean water for your Jikin goldfish. A high-quality filter will help remove waste and toxins from the tank, ensuring a healthy environment for your fish. Consider choosing a filter specifically designed for freshwater aquariums that can handle the size of your tank.

Substrate & Decor

Choosing suitable substrate is another important aspect when setting up a tank for Jikin goldfish. Opting for fine gravel or sand as substrate will prevent injury to their delicate fins while allowing them to sift through it naturally as they forage for food.

Keep in mind that Jikins are active swimmers and appreciate open spaces. Avoid overcrowding the tank with too many decorations or ornaments that may restrict their movement. Instead, focus on providing a few well-placed decorations that offer hiding spots and visual interest without overwhelming the swimming space.

Adding floating plants such as duckweed or water lettuce can provide shade and help maintain water quality by absorbing excess nutrients. These plants also serve as a natural food source for Jikin goldfish, enhancing their diet and adding variety to their meals.

By creating an ideal habitat with appropriate tank size, optimal water parameters, suitable substrate, and carefully chosen decor, you can ensure a comfortable and thriving environment for your Jikin goldfish.

Tankmates & Temperament

Jikin goldfish have unique behavior and temperament that make them interesting additions to a community aquarium. Let’s explore their compatibility with other fish and the tank mates to consider or avoid.


Jikin goldfish are known for their vibrant colors and elegant fins, but they also have distinct behavioral traits. They are generally peaceful and calm, making them suitable for community tanks. However, it’s important to note that individual fish may display varying temperaments, so observing their behavior is crucial.

Compatible Tank Mates

When selecting tank mates for Jikin goldfish, it’s essential to choose species that can coexist harmoniously. Some compatible options include:

Common Goldfish: These hardy goldfish share similar requirements and behaviors, making them ideal companions for Jikin goldfish.

Comet Goldfish: Like the Common Goldfish, Comet Goldfish are well-suited to live alongside Jikins due to their comparable needs.

White Cloud Mountain Minnows: These small, peaceful fish can add movement and diversity to the aquarium without posing a threat to Jikins.

Rosy Red Minnows: These minnows are another suitable choice as they are peaceful and can tolerate similar water conditions as Jikins.

Remember that when introducing new tank mates, it is crucial to monitor their interactions closely initially. This allows you to ensure compatibility and prevent any aggressive behavior or stress among the fish.

Jikin Goldfish in a Bowl
Jikin Goldfish in a Bowl

Tank Mates to Avoid

While many fish can peacefully coexist with Jikin goldfish, there are certain species that should be avoided due to potential conflicts or incompatible needs:

Aggressive Fish: Aggressive species such as Cichlids or Barbs may harass or harm the more docile Jikin goldfish.

Nippy Fish: Fish known for nipping at fins like Tiger Barbs or Serpae Tetras can cause stress and damage to the delicate caudal fin of Jikin goldfish.

Bottom-Dwelling Fish: Species that inhabit the lower regions of the tank, like Corydoras Catfish, may stir up substrate and create an unsuitable environment for Jikins.

It’s crucial to research potential tank mates thoroughly before introducing them to your Jikin goldfish aquarium. Understanding their behavior, compatibility, and specific care requirements will help ensure a harmonious and thriving aquatic community.

Jikin Goldfish Care

Jikins are beautiful and unique creatures that require proper care to thrive in your aquarium. Here are some essential care recommendations to ensure their well-being.

Diet & Nutrition

Proper nutrition is crucial for the health of your jikin. Follow these guidelines to provide them with a balanced diet:

High-Quality Pellets: Choose high-quality pellets specifically formulated for goldfish as their staple food. These pellets should contain essential nutrients like proteins, vitamins, minerals, and fiber.

Variety of Foods: Supplement their diet with a variety of foods such as freeze-dried or frozen brine shrimp, bloodworms, and daphnia. This will provide them with additional nutrients and prevent boredom.

Feeding Schedule: Feed your jikin goldfish small portions 2-3 times a day. Avoid overfeeding, as it can lead to obesity and health issues.

Monitor Eating Habits: Pay attention to their eating habits and adjust the amount of food accordingly. Remove any uneaten food after a few minutes to maintain water quality.

Fish flake food
Fish flake food

Common Diseases & Prevention

Like any other fish, jikin goldfish are susceptible to certain diseases. Here are some common diseases and preventive measures:

Ich (White Spot Disease): This parasitic infection causes white spots on the fish’s body. Maintain good water quality, avoid sudden temperature changes, and quarantine new fish before introducing them into your aquarium.

Fin Rot: Poor water conditions and stress can lead to fin rot, characterized by decaying fins. Regular water changes, maintaining proper filtration, and a balanced diet can help prevent this disease.

Dropsy: Dropsy is a bacterial infection that causes the fish’s abdomen to swell due to fluid retention. Maintain excellent water quality, avoid overcrowding, and promptly remove any sick fish from the tank.

Preventive Measures: Quarantine new fish before adding them to your main tank to prevent the spread of diseases. Avoid exposing your jikin goldfish to extreme temperatures or sudden fluctuations in water parameters.

By following these care recommendations, providing a balanced diet, and taking preventive measures against common diseases, you can ensure that your jikin goldfish live a healthy and happy life in your aquarium!

Breeding the Jikin Goldfish

To successfully breed Jikins, it is crucial to create the right environment in their tank.

Recommended Tank Set Up

Start by selecting a spacious tank with a capacity of at least 20 gallons to accommodate the breeding pair comfortably. Ensure that the tank has a filtration system to maintain water quality and stability. Provide hiding spots using plants or decorations to give the fish a sense of security during spawning.

Breeding Process

Breeding Jikin Goldfish requires careful preparation and observation. Begin by introducing a male and female Jikin goldfish suitable together into the breeding tank. To encourage spawning behavior, gradually increase the temperature of the water. Monitor behavior closely for signs of courtship.

The male will chase the female around while nudging her abdomen to release eggs. As she releases eggs, the male fertilizes them externally by releasing milt (sperm). This process can be repeated multiple times over several days until all eggs are laid.

After spawning, promptly remove both parents from the breeding tank to prevent them from eating their own eggs or fry. It is essential to transfer the fertilized eggs carefully into another container with suitable conditions for hatching.

Set up a separate breeding tank for your Jikins to achieve optimal breeding conditions.

Fry Care

The hatched fry require special care and attention in order to thrive. It is crucial to provide them with appropriate nutrition from an early stage. Start by feeding them infusoria or liquid fry food for their first few days of life before transitioning them gradually onto powdered or crushed flake food as they grow.

Maintaining optimal water conditions is vital for fry development. Regularly monitor water parameters to ensure they remain within suitable ranges for healthy growth. Perform regular partial water changes to maintain water quality and remove any accumulated waste.

As the fry grow, it is important to separate them by size to prevent aggression and ensure fair access to food. Use dividers or separate containers to keep different-sized fry apart until they are large enough to be housed together without risk of harm.

Observing the growth and development of the fry is a rewarding experience. Note that not all fry will exhibit the desired Jikin characteristics; some may display variations or traits from their parent fish. Selective breeding can help enhance desirable traits in future generations.

Breeding Jikin Goldfish requires patience, attention to detail, and a commitment to providing optimal care for both parents and fry. By creating suitable tank conditions, closely monitoring the breeding process, and providing proper nutrition and care for the hatched fry, you can enjoy the fulfillment of successfully raising these beautiful fish.

Frequently Asked Questions

What is the rarest goldfish?

The rarest goldfish is often considered to be the “Blue-Eyed Telescope Goldfish.” Characterized by its distinctive protruding eyes and vibrant colors, this variety is not only visually striking but also quite scarce in the ornamental fish trade. Its rarity adds to its appeal among avid goldfish enthusiasts.

What is the oldest goldfish?

The title of the oldest goldfish goes to “Tish,” who lived an impressive 43 years. Tish’s longevity is a testament to the proper care and attention that goldfish can thrive on when provided with a suitable environment. This remarkable lifespan underscores the potential for these aquatic pets to become cherished, long-term companions.

What is a Japanese goldfish?

A Japanese goldfish refers to a variety of goldfish breeds that originated in Japan, known for their unique characteristics and aesthetic appeal. Popular breeds include the Ryukin, Wakin, and Ranchu, each distinguished by specific traits such as body shape, fin configuration, and color patterns. Japanese goldfish are often prized in the world of ornamental fishkeeping for their beauty and cultural significance.

How long can a Japanese goldfish live?

The lifespan of a Japanese goldfish can vary depending on factors such as the specific breed, overall care, and living conditions. On average, well-cared-for Japanese goldfish can live anywhere from 10 to 20 years. Providing a suitable habitat, proper nutrition, and regular health checks can contribute significantly to ensuring a longer and healthier life for these captivating aquatic pets.

Are goldfish lucky in Japan?

Yes, goldfish are considered symbols of good luck and prosperity in Japanese culture. The association with luck is deeply rooted in Japanese tradition, where goldfish are believed to bring positive energy and good fortune to households. In festivals and celebrations, goldfish are often featured prominently, further emphasizing their cultural significance as bringers of luck and joy in Japan.

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