Tamasaba Goldfish – Japan

About This Fish

The Japanese Tamasaba Goldfish (Carassius auratus) is a rare and highly sought-after ornamental goldfish variety prized for its beautifully rounded body, graceful single tail, and striking red-and-white coloration. Originating from the Yamagata and Niigata regions of Japan, this distinctive goldfish combines the elegant body shape of a Ryukin with the strong swimming ability and flowing tail of a traditional single-tailed goldfish.

Also known as the Sabao or Mackerel Tail Goldfish, the Tamasaba features a plump, rounded body, prominent back, and a long, flowing single tail that creates a stunning appearance as it glides through the water. Unlike traditional fancy goldfish with divided double tails, the Tamasaba’s single tail provides greater swimming efficiency, making it an active and graceful addition to spacious aquariums and outdoor ponds.

Japanese Tamasaba Goldfish are especially admired for their brilliant red-and-white patterns, often displaying deep red or orange-red coloration against a bright white body. Each fish possesses unique markings, making individual specimens particularly appealing to goldfish collectors and enthusiasts.

Developed in the colder regions of northern Japan, the Tamasaba is exceptionally hardy and well adapted to cooler water temperatures. Its strong constitution and active swimming behavior make it an excellent candidate for large freshwater aquariums and appropriately designed outdoor ponds, including systems housing compatible koi.

Despite its impressive appearance, the Tamasaba is relatively easy to care for when provided with adequate swimming space, efficient filtration, excellent water quality, and a nutritious diet. These fish are peaceful, social, and often develop recognizable feeding behaviors, making them enjoyable additions to established goldfish collections.

Whether you’re an experienced Japanese goldfish collector or simply looking for a unique, eye-catching centerpiece, the Tamasaba Goldfish offers a remarkable combination of beauty, hardiness, and traditional Japanese breeding heritage.

Features:

• Rare Japanese goldfish variety originating from the Yamagata and Niigata regions of Japan.
• Distinctive rounded body shape resembles the elegant Ryukin goldfish with a fuller, more muscular appearance.
• Long, flowing single tail creates graceful movement while providing excellent swimming ability.
• Brilliant red-and-white coloration features attractive patterns that vary naturally between individual specimens.
• Highly desirable collector’s goldfish valued for its unusual body shape, beautiful markings, and Japanese heritage.
• Exceptional cold tolerance makes the Tamasaba suitable for outdoor ponds in appropriate climates.
• Active and powerful swimmer compared with many delicate double-tailed fancy goldfish varieties.
• Peaceful temperament makes it suitable for communities of similarly sized, compatible goldfish.
• Potential koi pond compatibility when provided with adequate space, feeding access, and suitable water conditions.
• Hardy and adaptable when maintained in a stable, well-filtered freshwater environment.
• Impressive adult size allows mature specimens to become stunning aquarium or pond centerpieces.
• Long lifespan with proper nutrition, water quality, and ongoing care.
• Omnivorous feeding habits make it easy to provide a varied, balanced goldfish diet.
• Excellent aquarium and pond display fish with attractive movement and eye-catching coloration.
• Unique individual markings ensure that each specimen has its own distinctive appearance.
• Suitable for dedicated beginners and experienced aquarists who can provide the space and maintenance required for a large goldfish.

Specifications:

• Common name: Tamasaba Goldfish
• Other names: Sabao, Mackerel Tail Goldfish, Yamagata Goldfish
• Scientific name: Carassius auratus
• Family: Cyprinidae
• Origin: Japan – Yamagata and Niigata regions
• Type: Fancy goldfish, single-tailed variety
• Care level: Easy to Moderate
• Temperament: Peaceful, active, social
• Adult size: Commonly 6–12 inches (15–30 cm); exceptional pond-raised specimens may grow larger
• Lifespan: Approximately 10–15 years or longer with excellent care
• Diet: Omnivore
• Primary coloration: Red and white; individual patterns vary
• Body shape: Rounded, deep-bodied, Ryukin-like
• Tail type: Single, flowing mackerel-style tail
• Swimming level: All levels
• Temperature: 64–77°F (18–25°C) preferred; tolerates cooler seasonal water when properly acclimated
• pH: 7.0–8.0
• Water hardness: Moderate to hard
• Ammonia: 0 ppm
• Nitrite: 0 ppm
• Nitrate: Preferably below 40 ppm
• Minimum aquarium size: 55 gallons for one adult; larger aquariums preferred
• Recommended aquarium: 75+ gallons for multiple specimens, depending on adult size and filtration
• Pond compatibility: Yes, with sufficient depth, filtration, and seasonal protection
• Water flow: Moderate with adequate oxygenation
• Filtration: Strong biological and mechanical filtration
• Tank mates: Other similarly sized active goldfish and compatible pond fish
• Breeding: Egg layer
• Recommended application: Large freshwater aquariums, Japanese goldfish collections, ornamental ponds, and compatible koi pond environments

Feeding and Care Recommendations:

Feed a balanced diet of high-quality sinking goldfish pellets, supplemented with appropriate vegetables and occasional protein-rich foods. Sinking pellets can help reduce unnecessary air intake during feeding.

Offer small portions once or twice daily, adjusting feeding frequency and quantity according to water temperature, fish activity, and appetite. Avoid overfeeding, which can contribute to digestive problems and poor water quality.

Provide generous open swimming space, efficient filtration, and regular partial water changes. Because Tamasaba Goldfish are active swimmers and can grow considerably larger than many fancy goldfish, a spacious aquarium or properly maintained pond is essential for long-term health.

When housing Tamasaba with koi or other goldfish, monitor feeding behavior to ensure all fish receive adequate nutrition.

Important: Tamasaba Goldfish are cold-tolerant, but sudden temperature changes can cause stress. Outdoor pond suitability depends on local climate, pond depth, dissolved oxygen, and winter conditions. Never allow fish to become trapped in frozen or oxygen-depleted water.

Recommended application: A distinctive Japanese ornamental goldfish for spacious freshwater aquariums and outdoor ponds, prized for its brilliant coloration, graceful single tail, exceptional hardiness, and impressive swimming ability.