The koi
Both — and the split is specific. The carp was domesticated in China from roughly the 5th century BCE, and the earliest written record of coloured carp is a Chinese text of the Western Jin dynasty, 265–316 CE. The Dragon Gate legend that gives the koi its meaning is Chinese too. The ornamental varieties everyone pictures today — kohaku, taisho sanke, showa — were bred in Japan, in Niigata, from about 1804, and shown to the world in 1914.
Sources listed at the foot of this page.Long before anyone kept fish for beauty, carp were kept for food. The Chinese common carp was domesticated for the table, valued for being hardy and quick to breed. At that stage they were plain — brown or olive. Nothing that would be called a koi.
The earliest written record of coloured carp is a Chinese book of the Western Jin dynasty, 265–316 CE. At that time the fish were described as white, red, black and blue. That is the first point in the record where colour, rather than meat, is the notable thing.
Thousands of carp swim upstream against the current of the Yellow River. At Longmen — the Dragon Gate — the water falls too hard, and one by one they turn back. One keeps going. For its persistence the gods turn it into a dragon. Chinese legend of Longmen, the Dragon Gate
This is where the koi's meaning comes from — and it is a Chinese story. English-language sources that treat koi symbolism as simply Japanese are usually compressing two separate histories. The legend travelled east and merged with local custom; the famous carp streamers flown in Japan on 5 May belong to that later chapter.
Carp reached Japan along the usual routes of trade and exchange. For centuries they were farmed in mountain villages as a winter protein, not as ornament. In Niigata's snow country this became unusually important: households kept carp in irrigation ponds and sometimes indoors, and salted and dried them for the months when the roads closed.
Rice farmers noticed that their otherwise black-grey carp occasionally threw offspring with colour. They began selectively breeding the brightest. The first red-and-white fish — the genetic root of today's kohaku — appears in the record around 1820. It stayed a local Niigata secret for the better part of a century.
This is the single event most retellings skip. Niigata sent coloured carp to the Tokyo Taisho Exposition to drum up business for a poor mountain region. They won a medal, caught the eye of the Crown Prince, and went from regional curiosity to international object of desire. The Japanese name they travelled under — nishikigoi — means brocaded carp, the colours compared to woven silk.
Western enthusiasm for koi as a good-fortune symbol is newer than most people assume. Through much of the 20th century a koi pond abroad read as luxury and taste. The equation koi = good luck was largely fixed when feng shui moved into American interior design in the late 1990s and early 2000s, where water stood for wealth, fish made the water alive, and nine koi became the recommended number.
It is worth being exact here rather than scoring points, because the Japanese half of this story is the more impressive half.
Selective breeding to a standard is a slow, disciplined craft. Japanese breeders turned a food fish into more than a hundred recognised varieties, built the judging culture around them, survived the Second World War — when the brood stock was reportedly hidden in temple ponds — and rebuilt an industry that now supplies collectors worldwide. In 1968 koi were named Japan's national fish. No one else did that, and calling the koi simply "Chinese" would be as inaccurate as calling it simply "Japanese".
None of that is anyone's fault. It is just how a two-thousand-year story got compressed into one country's credit line.
Across both traditions the core meaning holds: perseverance, transformation, and fortune earned rather than received. A koi swimming upstream is not a lottery ticket. It is a picture of someone still going.
That distinction matters more than it sounds. The fish is often sold today as a charm — with the implication that owning one will do something for you. The older reading is the opposite: the fish is a picture of what you do. It is the difference between waiting for luck and swimming toward it.
This is why we use stone-grey ink rather than gold in our own mark, and why our koi sits still on the page instead of swimming. A charm performs. A reminder doesn't.
Both, in different senses. The common carp was domesticated in China from roughly the 5th century BCE, and the earliest written record of coloured carp is a Chinese text of the Western Jin dynasty (265–316 CE). The Dragon Gate legend is Chinese. The ornamental varieties people picture today were developed in Japan — in Niigata, from about 1804 — and shown to the world at the 1914 Tokyo Taisho Exposition.
Japanese, from nishikigoi — brocaded carp. The Chinese word for the same fish is lǐyú (carp), or the modern jǐnlǐ, brocade carp.
Chinese. The story of a carp leaping the falls at Longmen on the Yellow River and turning into a dragon is Chinese. It travelled to Japan and merged with local custom, including the carp streamers flown on 5 May.
The symbolism stands for perseverance, transformation and fortune earned through effort — not luck that arrives on its own. The "koi equals good fortune" equation as it is understood in the West today was largely fixed by feng shui entering American design culture in the late 1990s, not by ancient doctrine.
We are a cultural-experience company in Nanjing and Hangzhou, not historians. Where the record is thin — particularly on the folkloric origin of the first colour mutation — we have said so rather than repeating the tidiest version.
Nanjing, Hangzhou, Shanghai — a tea you whisk yourself, a guqin you press with your own fingers, seven days in one mountain. Small groups, bilingual throughout.
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