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Watonai
IntermediateA breed from crossing Wakin and Ryukin. Combines Wakin's swimming ability and Ryukin's elegance.
Difficulty
Intermediate
Temperature
5〜30℃（適温18〜24℃）
Lifespan
10-15 years
Size
15-25cm
Diet
Pellets, Bloodworms
About
The Watonai is a Japanese hybrid goldfish created by crossing the Wakin with the Ryukin (or Oranda). Its name is said to derive from Watonai, the protagonist of the classic Bunraku and Kabuki play "Kokusenya Kassen." The breed inherits the Wakin's streamlined, active body form while adding the Ryukin's elegant bifurcated double tail, resulting in a fish that is both agile and graceful. Common colors include red, white, sarasa, and calico. The Watonai is hardy and cold-tolerant, handling temperatures from 5 to 30°C—making it suitable for unheated outdoor ponds. Its strong appetite and active swimming nature mean it should not be housed with slow-moving fancy varieties. Watonai can grow to 15–25 cm and are known for longevity, often living 10–15 years in well-maintained conditions. Spacious tanks of 60 liters or more or outdoor ponds are ideal.
Basic Info
Origin
Japan
Lifespan
10-15 years
Size
15-25cm
Temperature
5〜30℃（適温18〜24℃）
Diet
Pellets, Bloodworms
Care Guide
Housing
Enjoy swimming in spacious tank
Temperature
Handles wide range of 15-25°C
Care Specifications
- pH
- 6–8
- Hardness (GH)
- 5–19 dGH
- Water Temp.
- 18–23℃
PeacefulGroupBreeding: Moderate
Sources: FishBase / Aqueon Goldfish Care Guide
Morphs (Varieties)
金魚品種は体型・尾型・鱗・色の選抜固定(line-bred)。出目・透明鱗(キャリコ)・白子等は単一座。
Line-bredEstablished by selective line breeding.
Single tail (wild-type fin)Sarasa (red-and-white)
Sources: Wikipedia - Goldfish (Varieties) / 金魚 - Wikipedia (日本語版・品種)
A curated selection of notable morphs. Inheritance modes are a breeding-planning guide; actual appearance varies with combos.
References & Sources
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Taxonomy & Authority
Accepted name: (Linnaeus, 1758)
Synonyms: Cyprinus auratus Linnaeus, 1758, Carassius auratus auratus (Linnaeus, 1758), Cyprinus thoracatus Valenciennes, 1842, Carassius burgeri Temminck & Schlegel, 1846, Cyprinus chinensis Gronow, 1854
Authority databases: FishBase · GBIF · FishBase: Carassius auratus · GBIF: Carassius auratus
Nomenclature follows global taxonomic authority databases.
Watonai Listings
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