Not furry, but we like them anyway.

Ghost Koi

Cyprinus carpio

Also called Ghost carp, Ogon x carp hybrid

CrossbreedShort profile

From United Kingdom, 1980s. A cross between wild carp and metallic Ogon koi.1

At a glance the quick version

Sizelarge

Shimmering metallic scales

Robust carp heritage

Popular, easy-going pond fish

Looks how to spot one

Metallic-scaled carp hybrid

Has the sturdy outline of a wild carp but with shining metallic scales inherited from its Ogon koi parent, often giving it a pale, shimmering, ghostly look in the water.1 2

Coloursmetallic silvermetallic golddarker carp tones1 2

Personality what they are like

Peaceful and sociable like other koi and carp, and can learn to recognise the person who feeds it.1 2

Daily activity how busy a day looks

An active pond fish that likes to forage along the bottom and cruise in open water, so it needs space to roam.2 1

Grooming and care the hands-on bits

Care is the same as for koi: a large pond with a pump and filter, water ideally around 15 to 25 C, and no feeding when the water drops below about 10 C.1

Home where they are happiest

A garden pond at least 1 m deep, or about 1.5 m where winters are harsh. Too large for indoor aquariums.1

Food basics what goes in the bowl

An omnivore. Carp naturally sift the bottom for insects, worms, crustaceans and plant matter; in a pond a quality koi pellet suits it.2 1

Company who they like around

A schooling fish that prefers company; carp are happiest in groups of five or more.2

The story where it all began

Ghost koi were developed in the 1980s by crossing wild carp with Ogon koi, and they quickly became very popular with British pond keepers. Their metallic sheen and carp toughness made them a favourite even though purists do not class them as true nishikigoi.1

Fun facts for the dinner table

1
Ghost koi and butterfly koi both appeared in the 1980s.1
2
One parent is the Ogon, a koi with a single metallic colour.1
3
Koi can be trained to take food from a person's hand.1
4
Carp have no stomach and grind their food with throat teeth instead.2

Recognised by the official bits

Koi hobby: Popular pond fish in the UK, though some keepers do not count it as a true nishikigoi1

The care rhythm a typical week and year

A typical home-care rhythm for a Ghost Koi. A starting point, not a vet's advice.

FeedingOnly in the warm seasonevery day
Pond checkevery day
Water testevery 2 weeks
Filter cleanevery month

Owner questions the things everyone asks

How often should I feed my Ghost Koi?

Feed your Ghost Koi once a day during the warm season, but stop feeding when the water drops below about 10°C. Furry Diary's starting plan suggests daily feeding only when it's warm, and always check the food label for amounts.1 Pet Wiki plan

What does a Ghost Koi eat, and what should it never eat?

Ghost Koi are omnivores and do well on quality koi pellets, which mimic their natural diet of insects, worms, and plant matter. Never feed them bread or human foods, as these can harm their health.1 2

How much space does a Ghost Koi need?

A Ghost Koi needs a garden pond at least 1 meter deep, or about 1.5 meters in harsh winters, and it's too large for indoor aquariums. They are active fish that need room to forage and cruise.1 2

What temperature, light or water does a Ghost Koi need?

Ghost Koi thrive in water ideally between 15 and 25°C, with a pond that has a pump and filter. They need natural light but also shade, and water quality should be tested every two weeks as per Furry Diary's plan.1 Pet Wiki plan

How often should I clean a Ghost Koi's home?

Clean the pond filter monthly and test the water every two weeks, as suggested by Furry Diary's starting plan. Daily pond checks help spot debris or issues early. Pet Wiki plan

Can a Ghost Koi live with others?

Yes, Ghost Koi are peaceful and sociable, and they prefer to live in groups of five or more. They can also live with other koi or carp.1 2

How long does a Ghost Koi live?

The lifespan of a Ghost Koi varies, but with proper care in a suitable pond, they can live for many years. For specific estimates, ask a good breeder or an exotic-pet vet.

Can I handle a Ghost Koi?

Handling a Ghost Koi is not recommended, as it can stress the fish and damage its protective slime coat. Enjoy watching them from above, as they may even learn to recognise you.1

Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Pet Wiki's own starting care plan. A friendly guide, not a vet's advice.

Koi

Butterfly Koi

Common Carp

Golden Orfe

Blue Orfe

Where this comes from

Every fact on this page has a numbered source. Spotted an error? support@petwiki.app.

Wikipedia: Koi en.wikipedia.orgused for ghost koi origin, parentage, metallic scales, status, koi pond care, behaviour
Wikipedia: Common carp en.wikipedia.orgused for carp body, diet, social behaviour, fun fact

Checked 2026-09-30. Text is written in our own words from these sources.