How Long Is A Koi Fish?

by | Last updated on January 24, 2024

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Most domestic Koi usually grow about

12 to 15 inches

long. Japanese Koi usually grow 22 to 26 inches in long. Jumbo sized Koi grow up to 34 to 36 inches long.

How big is the biggest koi fish?

Fun fact: The world’s largest koi carp ever in history is known as Big Girl, a gigantic koi

4.1 feet long and weighing in at 91 lbs

. Big Girl is owned by Geoff Lawton in Wiltshire, England, and she eats a half kilo of pedigree food every day in order to maintain her body weight.

How big is a medium koi fish?

Koi Fish (Cyprinus rubrofuscus) Care Level Medium Lifespan 25-35 years Size

Between 24 and 36 inches
Diet Omnivorous

How big do aquarium koi get?

Small Koi 2′′ – 8′′ 100 – 150 gallons Medium Koi 8′′ – 14′′ 250 – 300 gallons Large Koi 14′′ – 24′′ 400 – 500 gallons Jumbo Koi 24′′ – 36′′ 750 – 900 gallons

What is the oldest koi on record?


A Japanese Koi carp

is believed to be the longest living freshwater fish ever recorded, having lived to the incredible age of 226 before dying in 1977. The scarlet-coloured female Higoi, called Hanako, was born in 1751 in the middle of the Tokugawa era in Japan.

What is a ghost koi?

Ghost Koi are

a mix between a mirror carp and a metallic Ogon Koi

. Ghost Koi grow faster than standard koi and will have either a metallic shine, yellow scales or a ghost white appearance. Koi thrive in a stable environment.

Can koi fish bite?


Koi won’t bite while you feed them

, but may harmlessly pull on your finger as they try to get food. Public domain. Koi have very muscular mouths and will be able to give your fingers a noticeable “pull” if they manage to get ahold of any while feeding.

How much is a koi fish worth?

The cost for koi fish can range depending on if you buy one at a time or more than one. They can be

$20 each or even $85 each depending on the type

.

Can you eat koi?

US Angler agrees that

koi are edible

because folks eat carp all over the world. Koi are Amur carp that have been specifically culled for their unique coloration and carp, despite their meager reputation as table fare, can be delicious.

How big is a 1 year old koi?

Koi Genetics

Under the right conditions, the average Koi will be

between 6 and 8 inches

by the end of its first year, and by the time it is 3 years old it will have reached its full adult size.

Will koi eat smaller koi?

For more information, read our article on wintering Koi. Will big Koi eat smaller Koi? Can I have mixed sizes in my pond? Koi are omnivorous and they may eat Koi fry or eggs, but

they will leave smaller fish alone

.

How old do koi live to be?

25 – 35 years

Do koi fish get lonely?

As Cyprinus rubrofuscus became a more colorful and domesticated species, its behavior started to change to the extent of becoming a fish you can actually feed by hand. In other words,

koi have dynamically adopted social and gregarious traits, and this allows them to live alone in most situations

.

Is a koi a goldfish?

Koi and goldfish may look similar, but

the two are actually two different species

. Goldfish were developed by selectively breeding Prussian carp for color mutations.

Which is better koi or goldfish?

If you think that the larger the fish, the better it is then

koi clearly win out

. However, fish only grow to a size appropriate for their environments, so if your pond is only a few meters across, your koi won’t grow much larger than goldfish would, anyway.

Can koi live 200 years?

Reportedly, koi fish can live for much longer in the optimal conditions and there are supposedly many koi who live over 100 years. For the most part these are just rumors and most koi only live for a few decades. However,

the oldest koi on this list lived for over 200 years and had its age scientifically verified.

Can you make money raising koi fish?

So what can you make selling koi?

Some companies produce and sell 20,000 to 30,000 fish a year with prices ranging from $15 to $5000 each

-these kinds of companies may do $500,000 a year before expenses. In fact, when it comes to value koi can command some seriously large amounts of cash!

Why are koi fish so expensive?

The main reason why koi prices can go so high is largely due to

the prevalence of koi breeding

, which began in Japan in the 1700s by rice farmers. Just as dogs are bred for their specific traits, so were these koi selected for their distinctive colors and patterns.

How do you tell if a koi is a boy or girl?

The easiest way to tell is from fin shape and color. Male koi have smaller, more pointed fins that are opaque and generally colorful. Female koi, on the other hand, have larger, rounded fins that are partly or completely translucent or even transparent.

Can common carp breed with koi?


Common carp and koi will breed and produce fertile offspring

. Bighead carp, grass carp, and black carp might be able to produce viable hybrids with koi (like goldfish do), but the hybrids are likely to be sterile (like mules or koi x goldfish).

How many times a day should koi be fed?

How Often to Feed your Koi Fish. We recommend that you feed your fish

once a day

. This will provide enough nutrients for healthy fish and a healthy pond. Feeding them too often can put an excess amount of nutrients into your pond which can cause algae issues.

Do koi fish fight each other?

Most pond owners who are new to this arena, are shocked to see their Koi “fighting” each other one day, when in fact

they are NOT fighting but rushing at each other in a spawn

. Understandably, some females during this “amorous roughhousing” will endure a few abrasions, mainly on the face and flanks.

Can you swim in koi pond?


Do not touch your Koi fish or interfere with their habitat while swimming

. You should only handle your Koi with a bucket or net when moving them. If your kids are swimming in your pool, make sure they know that Koi are living animals that deserve space.

How many teeth do koi have?

But koi fish can still cost the tooth fairy a pretty penny, because they lose their teeth quite frequently, going through

up to 30 sets of teeth (or more)

throughout their lives.

Are black koi rare?

Ki Utsuri are a variety of black koi fish with yellow splotches all over their bodies. They are members of the Utsurimono family and are

considered among the rarest of koi varieties

.

What do koi taste like?

Eating koi is not recommended as it has been found that the meat contains too much mercury to be safe for human consumption – so what does koi taste like?

It tastes like what you would expect from your average freshwater fish

.

Are koi fish illegal in Australia?

Koi can be exported or taken out of the country but

it’s illegal to bring koi into Australia

. This means that there are no new bloodlines among the breeding stock. The Australian Koi Association has about 230 members despite the fact that koi can only be kept in New South Wales and Western Australia.

James Park
Author
James Park
Dr. James Park is a medical doctor and health expert with a focus on disease prevention and wellness. He has written several publications on nutrition and fitness, and has been featured in various health magazines. Dr. Park's evidence-based approach to health will help you make informed decisions about your well-being.