How difficult is it to keep Kyokai-line Ranchu?

Advanced. This is an advanced-level species. It requires specialized equipment and advanced husbandry skills with precise environmental control.

What is the ideal temperature for Kyokai-line Ranchu?

The ideal temperature for Kyokai-line Ranchu is 15〜28℃. Avoid sudden temperature changes and maintain a stable environment.

What is the lifespan of Kyokai-line Ranchu?

The average lifespan of Kyokai-line Ranchu is 10-15 years. With proper care and nutrition, they can live a long and healthy life.

How large does Kyokai-line Ranchu get?

Kyokai-line Ranchu typically reaches About 15cm as an adult. Size may vary depending on care conditions and individual genetics.

What should I feed Kyokai-line Ranchu?

Kyokai-line Ranchu feeds on: Prepared foods, frozen bloodworms. Aim for a balanced diet with appropriate feeding frequency.

What is the typical price for Kyokai-line Ranchu?

The price of Kyokai-line Ranchu varies significantly depending on variety, size, and individual quality. Check our market price page for the latest pricing information.

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Kyokai-line Ranchu

Advanced

Carassius auratus

The ranchu line descending from the fish bred by the first Ishikawa Kamekichi in Tokyo during the Meiji era. It values a powerful body, balance in the tail and beauty of movement, and is also known as the head-house line.

Difficulty

Advanced

Temperature

15〜28℃

Lifespan

10-15 years

Size

About 15cm

Diet

Prepared foods, frozen bloodworms

About

The association-line ranchu descends from the fish bred by the first Ishikawa Kamekichi in Tokyo during the Meiji era, and is one of the foundations of the modern ranchu. The All Japan Ranchu Federation, founded in 1941, granted the Ishikawa family the title of head house of the ranchu, and when the Japan Ranchu Association was founded in 1951 it took this line as its standard, which is why the fish is called the association or head-house line. Judging rests on a powerful body, balance in the form of the tail, and beauty of movement. Its criteria differ from the Uno line, which prizes head growth and colour, and the two are never judged side by side. The ranchu has no dorsal fin, reaches about 15cm, standardly carries a three-lobed, four-lobed or sakura tail, and is called the summit of goldfish keeping.

Source: Wikipedia (CC BY-SA 4.0)

Lifespan of the Kyokai-line Ranchu

The Kyokai-line Ranchu lives 10-15 years.

Size of the Kyokai-line Ranchu

The Kyokai-line Ranchu grows to About 15cm.

Temperature & humidity for the Kyokai-line Ranchu

The ideal temperature for the Kyokai-line Ranchu is 15〜28℃.

Basic Info

Origin

Tokyo, Japan

Lifespan

10-15 years

Care Specifications

pH: 6–8
Hardness (GH): 5–19 dGH
Water Temp.: 15–28℃

PeacefulGroupBreeding: Hard

Sources: FishBase (Carassius auratus) / Keihan Nishikigoi Center: goldfish water management / Kingyo Hitosuji: Ranchu

Morphs (Varieties)

Goldfish varieties are established by fixing mutations and by selective breeding, and traits of body form, tail form, scale type, colour and head growth are all carried forward as line-bred selections. No primary source identifying loci or dominance for individual traits could be found, so inheritance is recorded only as line-bred.

Line-bredEstablished by selective line breeding.

Ranchu body form (dorsal-less)Head growth (wen)Three-, four-lobed or sakura tail

Sources: Kingyo Hitosuji: Ranchu

A curated selection of notable morphs. Inheritance modes are a breeding-planning guide; actual appearance varies with combos.