April 23

Sarah Robertson

How to Care for Your Hariwake Koi?

The koi fish, which are known for their vibrant colors and designs, have been popular since ancient times. They're revered in many civilizations and countries. They're a fantastic way to make your own backyard pond or water garden even more beautiful. There are several types of koi fish and Hariwake koi is one of the most popular.

The Hariwake is one of the most popular and beautiful koi you'll find in most pet shops because it's simple to breed and extremely popular when found. However, It's also the most difficult pattern to identify correctly. The Hariwake is a two-colored, all-metallic fish that belongs to the Hikarimoyo-mono class of fish. Literally, it means one hue (mono) on a platinum (Hikari) canvas.

While Hariwake koi are very resilient, they are still living creatures that require proper care and maintenance in order to thrive. This article will provide tips on how to care for your Hariwake koi.

So, What Is a Hariwake Koi? 

As mentioned earlier, there are many distinct types of koi fish. Each has a unique color, design, and size. The Hariwake is a koi with a solid white base covered in metallic red, yellow, or orange spots. The spots might be big or tiny, and they may cover the entire fish or just portions of it.

They have racing pectoral fins, belly fins, and a milky whitetail that adds to their attractiveness. A healthy Hariwake Koi will have a long, thin body with a streamlined shape and a large head. Their lifespan is about 20-30 years, but they can live even longer with proper care.

Hariwake Koi Meaning

Hariwake, sometimes known as Kohaku, is a term used to describe white-colored metallic base color aircraft. Hariwake is characterized by its brilliant white metallic base color, unlike Kohaku, which can be outlined with yellow or orange hues. Kikusui (Doitsu) is the Doitsu version of a Kikusui; however, Kikusui can also be found in Hariwake.

Origin

Hariwake is a type of Japanese carp that results when you cross different groups of the Ogon, originally a single-colored metallic koi, and mix them together to produce the combination of orange or yellow pattern markings against a platinum white backdrop, which is characteristic of the Hariwake. Because of their stunning metallic gleaming appearance, they are much valued by koi enthusiasts, who strive for perfection.

Hariwake Classification

Hariwake Classification

The Hariwake group includes a variety of koi types that each have their own set of characteristics. All of them, like any other fish species, have a distinct distinguishing feature that distinguishes every one of them. Because of the distinct color combination and pattern distribution, as well as scale shade especially with the metallic gleaming kinds, they are evaluated based on their body form with features such as the fin and caudal peduncle growth.

Classified Based on Scale Pattern 

Hariwake Koi are beautiful fish that can be divided into three categories depending on the presence of scales on their lovely bodies:

Doitsu Hariwake Koi

Doitsu hariwake, this category of koi fish has a scaleless body. The Doitsu hariwake have a slim and long body shape with long fins that make them look elegant and swift when swimming. They are one of the most popular koi in the Hariwake group because of their beauty, which is attributed to their white coloration with orange or yellow spots. While their bodies are mostly white, their spots can be either small or large and are usually located on their dorsal, caudal, and pectoral fins.

Tancho Hariwake Koi

The Tancho Hariwake is a beautiful variation of the koi that has a red or orange spot on its head. The rest of the body is a beautiful metallic white with yellow spots. The Tancho Hariwake is one of the most popular variations because of its beauty and uniqueness. it is also quite rare to find a Tancho Hariwake with a perfectly round spot on its head.

Gin Rin Hariwake Koi 

The Gin Rin Hariwake is a breed of koi with sparkling scales due to a genetic mutation. The Gin Rin scale type is sometimes referred to as, the "silver scale," and it's easy to see why. The Gin Rin scales act like a mirror and reflect the light.

 This gives the koi an added dimension of shimmer and brilliance that's simply breathtaking. Because of this unique quality, Gin Rin Hariwake is some of the most popular and sought-after koi in the world. Lemon gin rin hariwake koi and orange gin rin hariwake koi are two examples of this stunning koi type.

This variety of Hariwake koi is bred to have a high percentage of these special scales. In fact, most Gin Rin Hariwake will have at least 50% of their body covered in these magical-looking scales.

Classified Based on Color Pattern

Hariwake koi displays a beautiful solid metallic-white base color coupled with bright, vibrant patterns of yellow or orange. Hariwake has a brighter, more luminous white than Kohaku and Sanke's softer, matte-white.

Lemon Hariwake Koi

The Lemon Hariwake or the yellow hariwake koi is a type of koi with a yellow hue on its metallic white body. The yellow may be in the form of spots or streaks, and it is usually located on the dorsal, caudal, and pectoral fins. The color of the lemon Hariwake is deeper in Doitsu and less deep in wagoi. However, it mostly depends on the water condition and the food they are fed.

Orenji or Orange Hariwake Koi 

The Orenji Hariwake has bright, brilliant orange tones on its platinum white body. There may be a little bit of orange on the body or a lot of oranges. It all depends on the particular fish and what its genetics are. The orange color is usually located on the dorsal, caudal, and pectoral fins but can be found on other parts of the body as well.

Hariwake Koi Keeping Conditions

Hariwake Koi Keeping Conditions 

Proper care is essential for the well-being of your koi fish, and there are some specific things to keep in mind when caring for a Hariwake koi.

Habitat 

In order to take good care of your Hariwake koi, you will need to provide them with a large enough pond or tank. It is recommended that you have a pond that is at least 1000 gallons in order to accommodate full-grown Hariwake adult koi.

 If you are keeping your koi in a tank, then you will need a tank that is at least 300 gallons. Hariwake koi can grow to be quite large, so it is important to make sure that you have enough space for them to swim and exercise.

It is also important to provide your koi with a well-filtered and aerated pond or tank. A good filtration system will help to keep the water clean and free of harmful toxins and bacteria. A good aeration system will help to keep the water oxygenated, which is essential for the health of your koi.

For koi, the minimum acceptable level of dissolved oxygen should be 5.0 mg/L. In the fish world, there is some disparity in how much-dissolved oxygen is permissible in water, but 5.0 mg/L is a reasonable starting point. The physical maximum that water can hold is 18 mg/L (5.0 mg/L x 3.6), but koi can only tolerate levels up to 12 mg/L (5.0 mg/L x 2.4).

The pH level of your koi pond or tank is also important to consider. The ideal pH level for koi is between 7.0 and 8.5. If the pH level of your water is too high or too low, it can be harmful to your koi. To test the pH level of your water, you can use a simple pH test kit.

Koi are cold-water fish, and they do best in water that is between 60 and 75 degrees Fahrenheit. In the summer months, it is important to make sure that the water does not get too warm. If the water gets too warm, it can be harmful to your koi. You can use a pond heater or an air conditioner to help keep the water at a comfortable temperature for your koi.

In the winter months, it is important to make sure that the water does not freeze over. If the water freezes over, it can prevent oxygen from getting into the water, and this can be harmful to your koi. You can use a pond heater or a water aerator to help keep the water from freezing over.

To decorate the outdoor pond or tank, you can use pebbles, rocks, and plants. Aquatic plants such as water lilies, lotuses, and irises can add beauty to your pond or fish tank and can help to keep the water clean and oxygenated, and they can also provide hiding places for your koi. It is important to use aquarium-safe aquatic plants that will not release toxins into the water.

Diet

A healthy diet is essential for the well-being of your koi fish. Koi are omnivorous, which means that they will eat both plants and animals. In the wild, koi will eat a variety of things, including algae, insects, and small fish.

In captivity, koi can be fed a variety of things, including pellets, flakes, vegetables, fruits, and live foods. It is important to provide your koi with a varied diet in order to ensure that they are getting all of the nutrients that they need. Foods that are rich in vitamins, fats, and minerals are especially important for koi.

  • Foods that are rich in vitamins
    Koi fish must be fed a diet that is rich in vitamins in order to stay healthy. Some of the best foods for koi in terms of vitamin content are algae, brine shrimp, daphnia, and bloodworms. Algae is a type of plant that is often found in ponds and tanks. It is rich in vitamins A, C, and E. Brine shrimp are small crustaceans that are often used as live food for fish. They are rich in vitamins A, C, and E. Daphnia are small freshwater invertebrates that are often used as live food for fish. They are rich in vitamins A, C, D, and E. Bloodworms are small worms that are often used as live food for fish. They are rich in vitamins A, B, and C.
  • Foods that are rich in fats
    Koi fish must be fed a diet that is rich in fats in order to stay healthy. Some of the best foods for koi in terms of fat content are salmon, tuna, and sardines. Salmon is a type of fish that is often fed to koi. It is rich in omega-3 fatty acids, which are essential for the health of koi. Tuna is a type of fish that is often fed to koi. It is rich in omega-3 fatty acids, which are essential for the health of koi. Sardines are a type of fish that is often fed to koi. They are rich in omega-3 fatty acids, which are essential for the health of koi.
  • Foods that are rich in minerals
    Koi fish must be fed a diet that is rich in minerals in order to stay healthy. Some of the best foods for koi in terms of mineral content are shrimp, crab, and lobster. Shrimp is a type of seafood that is often fed to koi. It is rich in calcium, phosphorus, and magnesium. Crab is a type of seafood that is often fed to koi. It is rich in calcium, phosphorus, and magnesium. Lobster is a type of seafood that is often fed to koi. It is rich in calcium, phosphorus, and magnesium.

What Not to Feed Your Hariwake Koi? 

There are a few things you should not give your koi. Carbohydrates are one of them. You should also avoid giving them white bread, peas, and corn. Carbs are difficult for koi fish to digest. Don't offer them any wild animals either.

When to Feed Your Hariwake Koi?

Koi are typically fed two times a day. In the morning, they should be given a small amount of food. In the evening, they should be given a larger amount of food. It is important to make sure that your koi do not overeat. Overfeeding can lead to health problems, such as obesity. Give them as much they can eat in 5 minutes. Make sure to remove any uneaten food from the pond so it doesn't decompose and pollute the water.

Hariwake Koi Fish Diseases and Prevention

Common Hariwake Koi Fish Diseases and Prevention 

Like any other common carp or wild carp, Hariwake koi carp are vulnerable to illnesses. Parasites, worms, and bacteria are the most prevalent causes of koi fish sickness. Fungal infections can also occur. The following are some of the most common koi fish diseases:

  • Ich - Ich is a type of fish parasite that attacks the skin and gills. Symptoms include white spots on the body, rapid breathing, and increased mucus production. Treatment involves raising the water temperature and adding salt to the water.
  • Dropsy - Dropsy is a type of bacterial infection. Symptoms include swelling of the body, redness of the fins, and lethargy. Treatment involves adding antibiotics to the water.
  • Velvet - Velvet is a type of fish parasite that attacks the skin. Symptoms include gold or brown dust on the body, increased mucus production, and loss of appetite. Treatment involves raising the water temperature and adding salt to the water.
  • Fin rot - Fin rot is a type of bacterial infection. Symptoms include redness of the fins, fraying of the fins, and lethargy. Treatment involves adding antibiotics to the water.
  • Flukes - Flukes are a type of fish parasite that attacks the skin and gills. Symptoms include itching, redness of the skin, and increased mucus production. Treatment involves adding salt to the water.
  • Anchor Worm s - Anchor worms are a type of fish parasite that attacks the skin. Symptoms include itching, redness of the skin, and lumps on the body. Treatment involves adding a dewormer to the water.
  • Fungus - Fungal infections can occur in koi fish. Symptoms include white patches on the body, redness of the fins, and lethargy. Treatment involves adding a fungicide to the water.
  • Koi Herpes Virus (KHV) - KHV is a type of viral infection. Symptoms include lethargy, appetite loss, and redness of the fins. Treatment involves raising the water temperature and adding an antiviral to the water.
  • Fish Lice - Fish lice are a type of fish parasite that attacks the skin. Symptoms include itching, redness of the skin, and increased mucus production. Treatment involves adding a dewormer to the water.
  • Trichodina - Trichodina is a type of fish parasite that attacks the skin. Symptoms include white spots on the body, increased mucus production, and gill damage. Treatment involves raising the water temperature and adding salt to the water.
  • Ulcers - Ulcers are open wounds on the body of a Hariwake koi fish. Symptoms include redness of the skin, loss of appetite, and lethargy. Treatment involves adding an antibiotic to the water.
How to Spot Sick Hariwake Koi Fish

How to Spot Sick Hariwake Koi Fish?

When a Hariwake koi fish becomes ill, it acts just like a person would. They'll avoid the group and typically congregate near the surface or pond bottom. They might stop eating or eat less. Other symptoms include:

  • They tend to keep their fins close to their body
  • They gasp at the surface
  • Their scales often look discolored or faded
  • They look more inactive than usual
  • They start rubbing their body against objects such as rocks
  • Might have cloudy eyes, red streaks on their fins, white spots, cottony tufts, bloating, or ragged fins

How Do You Pick a Hariwake Koi?

As almost all koi varieties look beautiful, many koi keepers have a tendency to just purchase any that they fancy without much thought. However, if one is hoping to purchase a hariwake koi, there are certain standards that the fish must meet in order for it to be considered a true hariwake. So how to select a beautiful Hariwake Koi?

  • Hariwake should have a bright, platinum-white colored base. Any blemishes on the scales of either color or a yellowish tinge to the base color will detract from the koi's beauty.
  • The white and the secondary color (known as "kiwa") should have clean, distinct edges. It should not be blurry or mottled.

  • The metallic color spots should be evenly distributed and of a single color. They can vary in size, but they shouldn't be so big that they touch each other or so small that they blend in with the base color.

  • Ideally, the Hariwake should have a clean, flawless, platinum-white head free of any secondary color invasion. If the secondary color penetrates down to cover part of the head (but not all of it), this does not ruin the value of a Hariwake.

  • The fins should be the same silver-white color as the body. The pectoral fins may or may not have instances of the secondary hue beginning at the fin's base and spreading out over a portion of each pectoral, but they are always present.


How can you develop a champion hariwake koi? 

Developing a champion fish takes a lot of dedication, especially if you want your Hariwake to be one of the finest. To ensure that they reach full size and with strong coloration, the following must be done:

A Proper and Healthy Diet during the Grow-out Phase 

To get the full potential out of your koi, you'll need to purchase high-quality food. There are many affordable options on the market that will help your fish grow to be healthy and beautiful. A healthy diet must include all the essential nutrients that your fish need to grow and thrive such as a:-

Protein- This can be found in Spirulina, essential lipids, and more

Carbohydrates- This can be found in wheat germ and other plant-based foods

Vitamins and minerals- These can be found in krill meal, garlic, and other natural sources

Fatty acids- Fatty acids can be found in many commercial koi foods as well as in live foods such as Daphnia, brine shrimp, and more

Maintain Proper Water Conditions 

During the grow-out phase, it's important to maintain proper water conditions in your pond. Always make sure that the water quality is top-notch. The majority of the time, you'll discover some hobbyists leaving the pond water to be somewhat greenish (with some algae growth) in order to have natural microorganisms growing in it, which is an extra addition for your Koi. However, if the water is too green, it could affect the quality of your koi's color.

The water in your pond must be clean and free of any toxins or pollutants. Ammonia, nitrites, and nitrates must be at 0 ppm. The pH should be between 7.0 and 8.4, with 8.0 being the ideal number. The water temperature should be between 65 and 75 degrees Fahrenheit.

The Right Pond Size to Allow Full-size Potential 

The size of your pond will play a big role in the development of your koi. If your pond is too small, your koi will not have enough space to swim and exercise. This can stunt their growth and affect their coloration. A good rule of thumb is to have at least 1,000 gallons for every 12-inch koi. Always remember not to overcrowd your pond as this will also lead to poor water quality.

A Stress-free Environment

A stress-free environment is essential for the development of your koi. Koi are very sensitive to changes in their environment, and any sudden change can cause them a lot of stress. To minimize stress, make sure that you acclimate your koi to their new environment slowly. Do not make any drastic changes to the pond such as adding new fish, plants, or decorations all at once. Acclimate them one at a time so that your koi can get used to the change gradually.

Proper Filtration 

A good filtration system is essential for the health and well-being of your koi. It will help to keep the water clean and free of toxins and pollutants. A good filtration system will also help to oxygenate the water, which is essential for your koi's respiration. Make sure that you have a good filtration system in place before adding your koi to the pond.

Quarantine New Fish

Whenever you add new fish to your pond, it's important to quarantine them for at least 2 weeks. This will help to ensure that they are not carrying any diseases or parasites that could infect your other fish. During the quarantine period, keep a close eye on the new fish and look for any signs of illness. If you notice anything unusual, take action right away.

How to Spot Sick Hariwake Koi Fish

Regular Observation 

Last but not least, it's important to observe your koi regularly. This will help you to catch any problems early on and take care of them before they become too serious. Keep an eye out for any changes in behavior or appearance. If you notice anything unusual, take action right away. The following are some of the signs of the illness:

  • Loss of coloration
  • Reduced activity
  • Unwillingness to accept foods

If you notice any such signs in your hariwake koi fish, it is very important to quarantine the fish and treat them immediately.

These are just a few tips to help you develop a champion Hariwake koi. With dedication and proper care, you can have a beautiful and healthy fish that will be the envy of your neighborhood.

FAQ

Is Doitsu Hariwake and Kikusui Koi the Same? 

Technically, a Kikusui and a Doitsu Hariwake are the same. When the design is red, rather than yellow or orange, a Doistu Hariwake is referred to as a Kikusui. Kikusui is typically used to describe a Doitsu fish with a crimson pattern, but many people use all of them interchangeably.

How Can You Tell a Hariwake Koi Is Healthy?

The best way to determine if your Hariwake Koi is healthy is by looking at their fins and scales. If the fins are frayed or the scales are lifting, this is a sign of stress and poor health. Another way to tell if your koi are healthy is by their appetite. If they are eating less than usual, this could be a sign of illness.

What Is All Wagoi Hariwake? 

All Wagois are simply scaled Hariwake. If you want to add a more descriptive color like Lemon Hariwake or Orange Orenji Hariwake, that's fine, but it's really just an adjective in front of the genuine breed name to describe the hue. The terms red and white Hariwake scaled fish are usually used to refer to the Sakura Ogon variety.

It's hard enough when you try to understand it, never mind when you have to translate it. You must realize that just like in English, Japanese people have their own jargon and descriptive adjectives that are prefixed before the genuine breed name.

Are There Any Other Color Varieties of Hariwake Koi? 

No, there are no other color varieties of koi in the hariwake family apart from yellow and orange. The only colors that you will find are yellow and orange. Some people claim to have seen a red Hariwake, but a Hariwake that has red instead of orange isn’t a Hariwake at all. Instead, it falls into the Kohaku category, which refers to a fish that is red on white. It becomes an exceptional Kohaku in the instance of a platinum fish (not just white) with brilliant crimson accents.

Do Hariwake Koi Need to Be Kept in a Group? 

No, these species of fish do not need to be kept in a group. Even though they are social creatures, they can be kept individually without any problems. However, keeping them alone for a long time without any entertainment may cause them to become stressed.

What Is the Difference Between a Hariwake and a Platinum Ogon?

The main difference between a Hariwake and a Platinum Ogon is that a Hariwake has yellow or orange scales on a platinum body, while a Platinum Ogon has plain white scales.

How Long Does It Take for a Koi to Grow? 

Koi usually take about two to three years to reach their full size. However, some koi have been known to grow much faster and reach their full size in as little as one year.

What Is Ikan Koi Hariwake? 

Ikan koi hariwake is simply the Indonesian name for the Hariwake koi. They are the same fish, just with a different name.

What Is the Rarest Koi Fish in the Hariwake Family?

The Tancho Hariwake, a beautiful fish with a platinum body and a yellow or orange perfect round spot on its head, is the rarest koi fish in the hariwake family.

What Is a Hariwake Butterfly Koi? 

Butterfly koi, unlike normal koi fish, have lengthy magnificent fins that continue to lengthen throughout their existence. A hariwake butterfly koi refers to the koi fish with a platinum body, yellow or orange marking, and long flowing fins and tails. Doitsu orange or Doitsu lemon hariwake butterfly koi, orange or lemon gin rin hariwake butterfly koi are some common varieties of this koi fish.

What Is the Difference Between a Hariwake Koi and a Goshiki Koi?

The main difference between hariwake koi and goshiki koi is the number of colors on their scales. Hariwake koi are two-color fish that mainly have either yellow or orange patterns on their platinum body, whereas a goshiki koi has five namely red, blue, white, silver, and black patterns.

Wrapping Up

Hariwake koi are a beautiful and unique addition to any pond or aquarium. This variety of ornamental koi fish is easy to care for and has become a popular choice for many fish keepers. They are very peaceful fish with their bright colors and docile nature and are sure to bring years of enjoyment to any home.

 However, before purchasing a hariwake koi, be sure to do your research to ensure that you are getting a genuine fish. There are many variations in color and pattern, so it is important to know what you are looking for.

Hariwake is a strong fish that can survive in a wide range of water temperatures. It's usually better to err on the side of caution and provide them with the greatest possible environment. By following the tips above, you can be sure that your hariwake pet fish will thrive for many years to come providing you with years of enjoyment.

Sarah Robertson


I am a passionate blogger who also happens to be a fish keeping enthusiast. Writing about my hobby is something that I absolutely love to do, and it's no secret that my chosen topic is always centered around fish keeping.

Sarah Robertson

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