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Carassius auratus
The black line of the celestial eye, a Chinese goldfish whose eyeballs protrude straight upward. It has no dorsal fin, a four-lobed tail and a longish body, and finds food by smell rather than sight.
The black celestial eye is the all-black line of the Chinese celestial eye. The breed was fixed from a mutation of the red telescope: the eyeballs turn fully upward and protrude, the dorsal fin is absent, the tail has four lobes and the body is comparatively long. Adults reach about 20cm. It is recorded as far back as the Qing dynasty, when it was kept alongside the bubble eye by the court elite and not allowed out of the country. The fish is entirely blind and locates food by smell, so sinking foods and unhurried feeding are necessary. Brown, blue and calico forms also exist, understood to have arisen as mutations from the black and calico telescopes. Imports into Japan are not numerous.
Source: Wikipedia (CC BY-SA 4.0)
The Black Celestial Eye lives 5-10 years.
The Black Celestial Eye grows to About 20cm.
The ideal temperature for the Black Celestial Eye is 15〜28℃.
Origin
China (recorded as far back as the Qing dynasty)
Lifespan
5-10 years
Size
Sources: FishBase (Carassius auratus) / Keihan Nishikigoi Center: goldfish water management / Kingyo Hitosuji: Celestial Eye
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.
Find listings for this species
About 20cm
Temperature
15〜28℃
Prepared foods, frozen bloodworms
The fish is blind, so lighting cannot guide it to food. Enough light for viewing is sufficient; set it so the direction of the eyes can be checked from above.
With no dorsal fin and slow movement, keep the flow gentle. Because the eyes project straight up, leave the upper water clear of obstacles and equipment.
Since it hunts by smell it loses out to fast feeders. Combine it with equally slow Chinese breeds such as the bubble eye or butterfly tail.
The protruding eyes injure easily and do not recover. Offer sinking food and allow time for the fish to finish it, and keep nets and equipment away from the eyes.
Advanced. This is an advanced-level species. It requires specialized equipment and advanced husbandry skills with precise environmental control.
The ideal temperature for Black Celestial Eye is 15〜28℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Black Celestial Eye is 5-10 years. With proper care and nutrition, they can live a long and healthy life.
Black Celestial Eye typically reaches About 20cm as an adult. Size may vary depending on care conditions and individual genetics.
Black Celestial Eye feeds on: Prepared foods, frozen bloodworms. Aim for a balanced diet with appropriate feeding frequency.
The price of Black Celestial Eye varies significantly depending on variety, size, and individual quality. Check our market price page for the latest pricing information.
Last updated: September 17, 2026