Tamasaba Goldfish (Care Guide)

japanese ornamental fish breed

The Tamasaba Goldfish is a unique breed from Yamagata Prefecture, Japan. It is known for its single, flowing tail fin that resembles a kimono’s hem. The breed combines beauty with resilience, thanks to careful breeding.

The Tamasaba exemplifies the skill and commitment in breeding ornamental fish. It is rare outside Japan but remains sought after for its striking looks and hardy nature. However, details of its proper care and breeding are less known, which adds to its intrigue.

Understanding the specifics of Tamasaba care could impact its future popularity and breeding success.

General Characteristics

The Tamasaba Goldfish is known for its unique look, which includes a long tail and bright colors.

They are usually 10-12 inches in size and live for about 10 to 15 years.

These features make them popular and appropriate for both beginner and advanced goldfish keepers.


Tamasaba goldfish are elegant, with long tail fins and a red and white color scheme. They have a streamlined body and a large, round belly, with an arched back that is unique to their breed. Their single tail is distinctive and known for its beauty.

Tamasaba goldfish can grow to 10-12 inches and are active swimmers. They can live with koi fish, adding diversity and beauty to aquatic environments.


Tamasaba goldfish, originating from Yamagata Prefecture, have an average lifespan of ten years. This can be extended with careful maintenance and proper living conditions. Their survival depends on clean water, a well-rounded diet, and good genetics.

They grow to about 10 inches and need a large space from the start to avoid stress from moving. A spacious and well-kept tank or pond is critical for their growth and health, helping them live longer.


Tamasaba goldfish, a variant of Yamagata Goldfish, grow to 10-12 inches. They are larger than many ornamental fish. They have a high back and a long tail, enhancing their appearance.

They are known for their red and white colors and active swimming. Tamasaba goldfish are suitable for large ponds or aquariums due to their size and visual appeal.

Optimal Aquarium Configuration

An aquarium for Tamasaba goldfish requires ample space for growth and swimming. Choose tank equipment and decorations that ensure clean water and replicate their natural environment.

The tank design must combine visual appeal with the fish’s needs.

Tank Size

A minimum of a 50-gallon tank is recommended for Tamasaba goldfish due to their growth potential of 10-12 inches and need for space to swim actively.

A large tank is essential for their health, reducing stress and promoting well-being. Regular water changes and good filtration are necessary to keep the water clean and maintain the health of the Tamasaba goldfish.

A spacious tank allows for the full display of their swimming and contributes to their quality of life.

Tank Equipment And Decorations

To ensure a healthy and comfortable environment for Tamasaba goldfish, it’s essential to equip the tank with the right items. These include:

  1. Substrate: Use large, rounded gravel to protect the fish’s fins and tail from injury.
  2. Decorations: Add smooth stones, glass pebbles, and driftwood for a safe and engaging habitat.
  3. Lighting: A lighting system with an automatic timer is necessary to mimic natural light cycles, benefiting both fish and plants.
  4. Spawning Mops: Place spawning mops or equivalent items to support breeding and help regulate water temperature.

Each component is critical for the welfare of Tamasaba goldfish in an aquarium setting.

Health and Wellness

The health of Tamasaba Goldfish relies on proper diet, water quality, and tank upkeep.

A diverse and healthy diet, along with ideal water conditions, reduces disease risk.

Consistent tank cleaning and monitoring fish behavior are essential for their health management.


A balanced diet is crucial for Tamasaba goldfish health and longevity. They require high-quality fish flakes or pellets as their primary food for essential nutrients. Regularly include fresh vegetables like lettuce or zucchini to aid digestion.

Occasionally, give them live or frozen baby brine shrimp, which is good for fry food. To avoid nutritional deficiencies and strengthen their immune system, vary their food types.

Water Parameters

Water quality is crucial for Tamasaba goldfish health. It is important to regularly check and maintain pH, ammonia, and nitrate levels, as well as water temperature. These parameters are vital for their care, similar to what is provided for larger koi fish. Ideal water conditions are necessary for the Tamasaba’s health and to ensure they display their natural behavior and colors.

ParameterIdeal RangeNotes
pH7.0 – 8.4Stable pH is important for fish health
Ammonia (NH3)0 ppmAmmonia is harmful and can lead to stress and illness
Temperature (°F)65 – 72Suitable temperature is beneficial for their natural living conditions

Consistent testing and regulating of the water environment is essential to protect the Tamasaba, which can help them live up to 29 years or longer.

Tank Maintenance

Tank maintenance is crucial for Tamasaba goldfish health. Regular water changes and effective filtration are essential. Clean, stable water conditions are necessary for these fish to thrive.

Tamasaba goldfish require a large space to swim and grow. A balanced diet is important for their health. Despite their resilience, consistent tank care is mandatory.

Water parameters such as pH, ammonia, and nitrate levels must be monitored and adjusted regularly. Immediate attention to illness or distress is important for their well-being and longevity.

Common Diseases

Tamasaba goldfish are susceptible to ich, fin rot, and fungal infections, which are common in aquarium fish. These issues can arise if proper care is not given. To maintain their health:

  1. Watch for ich, seen as white spots like salt grains on the fish’s body and gills.
  2. Regularly check fins for fin rot symptoms, such as fraying or discoloration.
  3. Be alert for cottony patches that signal fungal infections.
  4. Separate sick goldfish immediately to stop the disease from spreading.

Taking early action and treating illnesses quickly is essential for the well-being of Tamasaba goldfish.

Disposition and Activity Levels

Known for their calm demeanor, Tamasaba goldfish exhibit moderate activity levels, gracefully navigating their aquatic environment with a serene presence. These single-tailed goldfish, which hail from Japan, are not only admired for their unique, fan-shaped tails but also for their tranquil nature, making them ideal inhabitants for both ponds and aquariums. Unlike some of their more energetic counterparts, Tamasaba goldfish are not known to be excessively active or boisterous.

The activity levels of Tamasaba goldfish are generally consistent, with periods of gentle swimming interspersed with moments of rest. They tend to explore their surroundings with an unhurried curiosity that is characteristic of their species. Their single-tailed morphology contributes to their streamlined movement through the water, which is less frantic than that of some multiple-tailed varieties. This poised swimming style is not only charming to observe but also minimizes stress on the fish, promoting a healthier life.

In a well-maintained environment with ample space, these goldfish can exhibit a broader range of behaviors, including foraging for food and interacting with tank mates. It is crucial for aquarists to provide an environment that caters to the Tamasaba goldfish’s activity levels, ensuring they have enough room to swim and express normal behaviors without overcrowding. This involves creating a habitat with the right balance of open swimming areas and places of refuge, which can include aquatic plants and decor.

Compatible Companions

When choosing companions for Tamasaba goldfish, it is important to select species that are peaceful and require similar living conditions. Originating from Yamagata, Japan, Tamasaba goldfish are known for their calm nature and unique, flowing tails. They are suitable for both community tanks and ponds.

For a healthy environment, consider these compatible species:

  1. Koi Fish: They can live with Tamasaba goldfish in large ponds, sharing similar care and feeding needs.
  2. Other Goldfish Varieties: Varieties like common goldfish and comets can live peacefully with Tamasaba goldfish due to their similar temperaments and swimming abilities.
  3. Freshwater Invertebrates: Species such as large freshwater shrimp and snails help maintain tank cleanliness by eating algae and waste.
  4. Hardy Plants: Plants like Marimo Moss Balls, Java fern, and Anubias are resilient and can tolerate the Tamasaba goldfish’s foraging. They also provide shelter and improve tank aesthetics.

Tamasaba goldfish are a distinctive choice for aquarium enthusiasts. Choosing the right tank mates is crucial for a healthy and visually appealing aquatic habitat.

Reproduction Practices

Reproduction of Tamasaba goldfish is a detailed task that requires careful selection and the right environmental settings to ensure the successful breeding and growth of the young fish. This type of goldfish is bred selectively for specific characteristics such as size, tail length, and color. For effective breeding, a warm water environment is necessary, as this increases the likelihood of spawning. Breeders often raise the water temperature to imitate springtime, triggering the fish to reproduce.

Before spawning, the water depth is kept low, which resembles the natural breeding environments of goldfish. Breeders use spawning mats like koi brushes to collect eggs, which simulate the function of aquatic plants. After laying, the eggs are placed in a separate container to protect them from predators, including the adult goldfish.

As the eggs develop, they are given a specialized diet, including live Artemia nauplii and liquid food, to support their growth. Regular water changes and monitoring are crucial in the early phases to avoid disease and ensure healthy growth.

Culling is a key step in breeding, as it allows breeders to choose the best fish to continue the lineage. Selected fish are moved to a different container to grow without competing for resources, ensuring the preservation of the desired traits in the Tamasaba goldfish.

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