Japanese koi carp is one of the most loved aquarium fish. The Koi fish originating from Japan is known as the largest line of ornamental carp in the world. To discover more interesting things about this strain please continue to read the information in the article below.
What is Koi fish?
Koi fish is now a trend of many people. However, to understand all about this fish, not everyone knows.
Origin of Koi fish
Koi carp is a line of fish originating from China, only later imported from the land of cherry blossoms. Japanese Koi carp is the result of development in breeding technology.
In 1950, Japanese biological experts were sent to the Science and Technology Center of the University of Chicago to learn from experiences and successfully breed Koi fish.
Koi fish created by the Japanese have extremely attractive colors and high prices. Initially the Koi fish line was named Nishikigoi when it was created, until the 19th century it was officially renamed to Koi.
How do koi fish breed?
Koi fish start to breed for the first time when they reach 1-2 years old. On average, they can produce 150-200 eggs.
Koi fish eggs have adhesive so they often lay on water hyacinth and aquatic plants …
Usually after about 50 hours, the koi fish eggs will hatch into fry
Next, the fry will begin to learn to eat and grow with time.
Can Koi carp be eaten?
This is a thought that always appears in the mind of those who are passionate about drinking when they see a dead carp.
However, the Koi are NOT in fact edible and can only be kept as an ornamental. If you die in the process of raising the fish, it is best to bring the fish to the burial.
Characteristics of Japanese Koi fish
Koi carp is a strain of aquarium fish of relatively large size, on average an adult fish can fluctuate in length about 1 meter. The weight ranges from 6 to 8 Kg
However, there are still cases weighing up to 10kg, up to 2m in length.
So how long can the koi fish live? Normally, Koi can live from 40 – 60 years. If raised in ideal conditions: guaranteed water, adequate food, no enemies, the fish can live up to 230 years.
Japanese carp body
The body of the Koi is relatively round, elongated and shrinks in the tail. The back of the fish has soft ray fins and near gill also a pair of fins.
This is a feature that helps this fish to swim freely. The tail of the fish is generally short, split in half in the middle lobe, having only one color and no pattern.
The first part of the Koi fish
Koi fish head is relatively small in size with a wide, flat mouth and a pair of antennae on both sides of the edge. This strain also has a moderate eye size and should never be closed.
Koi carp scales and colors
Koi fish scales are relatively small, arranged and covered the entire body of the fish. Koi carp colors are usually divided into 8 main groups:
- Kohaku Color: White with red.
- Showa Sanke color: Red – black combination.
- Utsurimono Color: Combination of black and white.
- Shiro Bekko Color: Black mixed with white.
- Ki Utsuri Color: Combination of yellow and black.
- Kinginrin Color: Platinum color mixed with gold.
- Asagi color: the entire body of the fish is silvery gray.
- Tancho color: Full body white, the top of the head has a red circle (this color is similar to the national flag of Japan).
Classification of Japanese Koi fish
You may not know, there are currently an estimated 200 different strains of koi in the world., the Japanese Koi carp culture movement is currently being favored by many brothers.
However, in the framework of a limited article, we would like to analyze only some of the most popular Japanese fish lines today.
Koi carp Kohaku
Koi Kohaku is a line of ornamental carp with only 2 colors, but to own this fish you have to spend a not small amount of money.
Kohaku Koi have many variations and types, so they are highly sought after by aquarium hobbyists. There are only 2 popular colors on Kohaku’s body: white and red.
In which, red accounts for about 60%, white accounts for about 40%.
This line of fish has a large, round, plump body with a white cotton chest, giving viewers a strange sense of peace.
Koi Taisho Sanke (Sanke)
Koi Taisho Sanke is also called Sanke by the Japanese. This strain is the result of a re-creation between the red and white Kohaku strain and the other ornamental strain.
On the body of Koi Taisho Sanke there are mainly 2 red and white mixed with black spots. It is these black spots that make the difference in this strain.
Koi Taisho Sanke (Sanke)
The soft, unique lines on the fish body will make the viewer unable to take their eyes off even for just 1 second.
In particular, these black spots are not present on the top of the head, this is a feature that identifies them with the Koi Showa carp below
Koi Showa Sanshoku (Showa)
Showa Sanshoku Koi is also known quickly as Showa, in fact many people have mistaken this strain for Sanke carp.
However, if you take the trouble to notice, there is a dark patch that occupies most of the body and spreads to the top of the head. In addition, under the pectoral fins there is also a large black mark.
So, before buying fish, you need to pay special attention to this feature. If you don’t remember, please open this article and compare with the image.
Utsuri Koi (Giant Black Gold Koi)
Koi Utsuri has many variations, with a variety of colors, shapes and sizes. The fish can be white, red, yellow, black, spreading all over the body
Koi Bekko carp
Similar to the Kou Utsuri strain, the Benkko koi strain will also have the basic colors such as white, red, yellow.
However, the difference between the Bekko carp and the Utsuri Koi is that the black spots appear with as dense frequency as possible.
Chagoi koi fish
Koi Chagoi when a baby on the body will appear many different colors. As an adult, the colored patches on the fish’s body will become larger until they become the king of the Koi species in the aquarium.
Chagoi carp have a relatively plump body and big round, which is completely understandable because they are very gluttonous. Chagoi Koi fish can eat everything in the tank.
Currently, Chagoi Koi are bottled into three main categories: Brown, light blue (Midorigoi) and blue (Saragoi).
Instructions on how to raise beautiful, fast-growing Koi fish
Koi fish are healthy, relatively stable lines, they can easily adapt to a variety of environments. Whether it’s a glass tank environment or just a feng shui cement tank that doesn’t need an oxygen aerator, they can still grow normally.
What do koi fish eat?
Koi fish is a stream of fish living in the bottom layer of the water tank, but when feeding, you should float the food to reach the surface of the water.
This way, it will be easy to observe the true color on the body as well as the health status of the fish.
Food for mature Koi fish
To provide adequate nutrients for Koi fish, you should feed them with dry seed foods. The dry feed lines sold at aquarium stores are full of nutrients suitable for fish growth.
In addition to the dry grain food, you can add some vegetables, tubers and fruits to the fish for additional nutrients. Koi fish are omnivorous fish, so you should feed them a variety of foods.
In addition to the main food in the form of seeds, you should buy more: shrimps, small shrimp, worms, silkworm pupae, squid and other mollusks for fish to change.
Do koi fish eat 7-color fish?
Many brothers have a habit of keeping 7-color fish together with Koi carp in the aquarium, so they often worry about whether guppies will be eaten by Koi or not.
The answer to the fish is that the Koi do NOT eat guppies, they just ” swallow ” the guppies. So you should avoid keeping these two lines together.
Koi carp are very greedy, so if guppies will be their favorite food.
Food for koi fish
Fish fry will have a special care regime than mature Koi fish, you should choose foods with small sizes such as fine feed, shrimp postlarvae, small moina ….
See more: 🥇[TOP 10] Best Koi Food Reviews
Japanese Koi aquarium
When keeping Koi fish apart from food, you should pay more attention to their habitat. The most suitable environment for Koi fish is from 24 to 29 degrees Celsius.
Koi fish do not need too much oxygen but you should also pay attention to provide oxygen in about 2mg / liter of water.
Koi aquariums should be located in cool places in the summer and warm winters (Koi can withstand harsh winter weather from 0 – 24 degrees C).
Keep the aquarium in places where there is no direct sunlight , because too much sun in the summer can burn the fish.
Common diseases in Koi fish
While keeping Koi fish, you should regularly monitor the health of the fish to promptly treat and prevent common diseases.
Koi fish become red
If your family koi fish shows redness, white fungus and slippery slippery skin, you should conduct an isolation.
The cause of this disease is that fish come into contact with newly bought fish that have been infected before.
To quickly deal with this situation, you should add purple powder to the water and use an oxygen filter and Malachite green medicine to improve the effectiveness of treatment.
Koi fish lie still on the bottom, rubbing itself, jumping out of the water
When this phenomenon occurs, it is likely that the Koi fish has been infected with the tapeworm and the cyst that cling to the parasite on the body. If not handled promptly, the health of the fish will increasingly deteriorate and appear skin sores.
To overcome this, you should pour Paziwantel into the lake with a frequency of 2 times / day
Persistent monitoring for about 1 week, if nothing changes, the fish will quickly recover and swim around in the lake.
Koi fish are stressed
The reason why koi fish are suffering from Strees is that the owner has released many other ornamental fish species in the lake to keep together. Though, this action will make the aquarium more eye-catching and soulful.
However, when the number of aquarium fish in the tank is too large, it will deplete the amount of oxygen and the small fish can attack the tail of the Koi.
Failure to timely detect and separate the small aquarium fish will stress and die
Koi fish are shy
This phenomenon happens very often for the Koi fish that have just been brought into the family. Not only Koi fish, but any pet, when brought back, is also relatively shy of people.
The solution now is that in the first time you should limit your exposure so that the Koi can be mentally stable. Also, the aquarium should have a lid or a high wall to prevent the risk of the fish jumping out of the tank
After about 5-7 days you should feed the fish according to the time frame to form a habit. The regular feeding will be invisible to help the intimacy between the farmer and the fish more encouraged.
Koi fish have cataract eyes
Catfish is a common disease with common carp strains. So, if you find that the ankle is cloudy and weak, you should take the fish to a new tank and use purple medicine to treat it.
The main cause of this phenomenon is inadequate water resources, wrong sanitation, and improper water changes.
Insufficient water source in the aquarium can also cause fish to suffer from many other diseases such as: discoloration, anchor worms, fish lice, ruffled scales, gill fungus, hemorrhage …
The meaning of Koi fish in feng shui
Koi fish is one of the lines of the carp family, many people think that Koi fish farming will have a positive meaning in spiritual feng shui. Why?
People have a saying “Carp Dragon”, a saying implies the development and advancement in work. Therefore, raising Koi fish will help improve wealth, dispel impurities, etc.
Besides the meaning of the dragon carp, the red color often symbolizes luck and attracts fortune.
Therefore, most traders often have an aquarium in the house that will help improve their wealth and harmonize the negative and positive meanings in the house.
How to choose beautiful Koi fish, suitable for the area
Koi fish is one of the lines with a relatively high price, so when you buy fish you should choose carefully. Here are some tips on how to choose beautiful and healthy Koi fish.
Large size Koi fish with soft long tail is only suitable for keeping in large tanks. If kept in a glass tank, you should buy small carp to ensure adequate oxygen.
When buying Koi fish, you should not choose the fry line, you should buy an adult line with the size of about 20cm long. Because the fry are difficult to care for and the survival rate is only about 30%.
So, to save money, you should buy Koi fish with large, wide, clear and well-balanced color patches on both sides. The most beautiful Koi fish has white and red color that is completely funny on the whole body.
Avoid buying Koi fish with curved body, open gills or unbalanced side of the beard on both sides. Typically, if you see a distorted fish mouth, you should not buy, because this is a fish that does not meet the standards.
In addition to the criteria of appearance, you should pay attention to the health issue as well as the personality of the fish you are about to buy.
Should choose Koi fish with straight, elegant and flexible swimming shape.
How much does Koi seed (mini carp) cost?
For small-sized, small-sized fish larvae propagated in Vietnam, the price is relatively cheap, only around 10 – 20$ / fish .
The price of Koi fish is usually
The price of the above-sized Koi fish line that is hybrid F1 in Vietnam has a price ranging from 30 – 70 / fish, with a length of 18-40cm
For imported Koi fish from Japan, the price is from 50 to 100 / child, the size is from 10-19 cm.
In addition, in our country has also recorded a transaction of fish considered to have a selling price of up to 100 – 10000$
Above we have given full information about the Koi fish line from Japan. Hopefully, after consulting this article, you will have more knowledge in choosing to buy and take care of a beautiful Koi fish.