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Carassius auratus
A variety pairing the wakin body with a long streaming tail and the protruding eyes of a telescope. Judging standards have not settled, so most are culled during selection and few reach the market.
The yanagi demekin pairs the wakin body with a long streaming tail and the large protruding eyes of a telescope. The name likens the slender body with its trailing tail to a willow, and the fish is notable for holding two opposed traits at once: the swimming ability of a wakin type and the telescope eye. Judging standards have yet to settle, and most such fish are culled during selection, so few reach the market. In Yamagata Prefecture, breeding of the shonai goldfish for side viewing in tanks has produced a telescope-eyed form called shonai yanagi, which suggests that putting telescope eyes on a wakin body has been attempted in several places. Because the eyes project, faster tank mates risk injuring them.
Source: Wikipedia (CC BY-SA 4.0)
The Yanagi Demekin lives 10-15 years.
The ideal temperature for the Yanagi Demekin is 15〜28℃.
Origin
Japan
Lifespan
10-15 years
Temperature
15〜28℃
Prepared foods, frozen bloodworms
Sources: FishBase (Carassius auratus) / Keihan Nishikigoi Center: goldfish water management / Kingyo Hitosuji: Wakin / Kingyo Hitosuji: Black Telescope
Goldfish varieties arose from fixed mutations and selective breeding, and body form, tail form, scale type, colour and head growth are all carried forward by selection over generations. Inheritance is therefore shown as line-bred throughout rather than split into dominant and recessive.
Sources: Kingyo Hitosuji: Wakin
A curated selection of notable morphs. Inheritance modes are a breeding-planning guide; actual appearance varies with combos.
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Sources: CITES Appendices (species not listed) / FishBase (Carassius auratus)
Regulations may change. Always verify the latest information with the relevant authorities.
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As a wakin type it suits viewing from the side or above and needs no special lighting; enough to show the sweep of the long tail is plenty.
It swims quickly like any wakin type, but the eyes project, so keep the layout simple and free of sharp edges. Fit a cover, as these fish jump.
Fast wakin types and comets may peck at its eyes. Choose companions of similar build that are not inclined to nip.
A damaged eye does not recover. Keep equipment clear of the eyes when netting or changing water. Circulation is small and the fish is hard to find.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Yanagi Demekin is 15〜28℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Yanagi Demekin is 10-15 years. With proper care and nutrition, they can live a long and healthy life.
Yanagi Demekin feeds on: Prepared foods, frozen bloodworms. Aim for a balanced diet with appropriate feeding frequency.
The price of Yanagi Demekin varies significantly depending on variety, size, and individual quality. Check our market price page for the latest pricing information.
Last updated: September 17, 2026