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Fantail Goldfish
BeginnerA basic variety with beautiful fan-shaped tail. Said to be the prototype of Ryukin, hardy and easy to keep.
Difficulty
Beginner
Temperature
5〜30℃（適温18〜24℃）
Lifespan
5-15 years
Size
12-20cm
Diet
Artificial feed, Bloodworms
About
The Fantail is one of the most widely kept fancy goldfish varieties worldwide and is considered a foundational breed from which many other fancy types, including the Ryukin, are thought to descend. It features an egg-shaped body, a high dorsal fin, and a broad, double fan-shaped tail in three-tail or four-tail form. Fantails come in an exceptional range of colors including red, white, sarasa, calico, and black. They are among the hardiest of the fancy goldfish varieties, tolerating a wide range of water parameters, which makes them an excellent choice for beginners. A 60 cm or larger tank with a reliable filter and neutral water quality is the standard care setup. Despite their hardiness, Fantails are still susceptible to swim bladder disorder if overfed, so moderate portions of easily digestible food are recommended.
Basic Info
Origin
China
Lifespan
5-15 years
Size
12-20cm
Temperature
5〜30℃（適温18〜24℃）
Diet
Artificial feed, Bloodworms
Care Guide
Housing
Keep in 60cm+ tank
Feeding
Voracious appetite, eats almost anything
Compatibility
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.
Fantail (paired caudal)
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.
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