Koi Fish Tattoo Meaning, and the Rules People Argue About

Almost all of it comes from one story

A carp swims up a river against the current and reaches a waterfall at a place called the Dragon Gate. Most turn back. One keeps going, clears the falls, and is turned into a dragon.

That is the source. The Chinese legend is old, it travelled to Japan, and it is where every serious koi meaning comes from: perseverance, going against the current, becoming something else by refusing to stop. If somebody asks what your koi means and you tell them that story, you are on solid ground.

What follows is the rest of it, sorted into what the tradition actually carries and what was added later. The second list is not worthless. It is just younger than it is usually presented as being.

What the tradition carries

Perseverance, and transformation through it. The Dragon Gate reading. This is the one that is genuinely old and genuinely Japanese and Chinese, and it is why a koi and a dragon are so often drawn in the same piece, sometimes as one fish mid-change.

Good fortune. Koi are a fortune symbol in both traditions, independent of the falls story, and have been for a long time.

The place koi hold in Japanese tattooing. Koi are one of the core subjects of irezumi, drawn with water, wind bars, maple leaves or lotus, and those surroundings are part of the grammar rather than decoration. A koi drawn in that style is making a statement about the tradition it belongs to, which is worth knowing whether or not you want to make it.

The rules people argue about

Which way it swims. Upstream for a struggle you are still in, downstream for one you have come through. This is the single most argued point about koi tattoos, and the honest position is that it is a real convention among Japanese tattooers and not an ancient rule. Ask five artists and you will get the reading back, and you will also get at least one who says it is read the other way round, and one who says the fish should simply suit the body it is on. Agree what yours says with your artist before the drawing is finished, because it is easier to settle on paper.

The colours. You will find a list: black for the father, red for the mother, blue for a son. That list is real, and it is not from tattooing. It is from koinobori, the carp streamers flown for Children’s Day, where the colours do stand for members of a family. Transplanting those meanings onto a tattoo is a modern move. It is a lovely idea for a family piece and it is worth knowing it came from a flag rather than from a tattoo tradition.

Two koi together. Read as balance, and usually by way of yin and yang. The yin and yang symbol is Chinese and is not two fish; the fish reading is a later overlay. It is now so common that it means balance in practice, which is a fair description of how most symbols end up meaning anything.

Scale counts, fin positions, the number of bubbles. Assigned meanings exist for all of these in published lists. They do not come from anywhere.

Two koi fish, and what the pair means

Two koi drawn head to tail in a circle are the most requested koi layout after the single fish, and they get their own section because the meaning people attach to them has three separate sources.

Balance, by way of yin and yang. The circling pair is read as two opposites held together. The yin and yang symbol is Chinese and older than any koi tattoo, and it is not two fish; the two teardrop halves were redrawn as koi much later. The reading is real in practice, because it is how almost everyone now reads the design, and recent in origin.

A couple. Two koi as two people, often one dark and one light, is the most common reason the pair is chosen. That is a modern reading too, and a good one, and it does not need the yin and yang to carry it. Matching koi on two people, one each, is a variation of the same idea.

One up, one down. Some pairs swim in opposite directions on purpose, one fish still in the struggle and one through it. That borrows the upstream and downstream convention above and applies it to two people or two halves of one life, and it is worth agreeing with your artist which fish is which before the drawing is finished.

What the pair does not mean is anything about the number two in the Dragon Gate story. That story is about one fish that kept going. If you want the perseverance reading and the balance reading, they can both be there, as long as you know they came from different places.

Koi fish tattoo designs, and which layout says what

What is drawn around the fish matters as much as the fish, and in Japanese work it always has. The koi designs on this site show each of these.

Climbing a waterfall or rough water. The Dragon Gate itself, the struggle still going on. This is the koi at its most traditional.

Halfway to a dragon. A carp body with a dragon’s head and claws, rising out of the water. It is the moment the story is about, and it says the struggle paid off.

With a lotus. The lotus grows out of mud and opens clean above the water, which is the old Buddhist and Hindu reading of rising out of a hard start. Next to a koi it doubles the idea of coming through something. The lotus guide has the flower’s own history.

With cherry blossom, peony or maple leaves. These are the seasonal elements of Japanese tattooing. The cherry blossom carries the Japanese sense of how briefly things last, and the peony is a flower of wealth and good fortune in Chinese and Japanese art. In a koi piece they also set the season and fill the space around the fish, which is part of how irezumi is composed.

With the moon. A koi leaping past a crescent moon is a modern design. Lovely to look at, with no tradition behind the pairing.

A single fish in fine line. One small koi in a few thin lines drops the water and the setting, and with them most of the traditional grammar. It still carries the perseverance reading, and at a small size it holds up far better than a detailed fish shrunk down.

The colour of the fish itself

Separate from the koinobori colour list above, koi breeders name their fish by pattern, and people sometimes ask for a tattoo of a particular kind. A kohaku is white with red markings, the classic koi. A showa is black with red and white. A tancho is white with a single round red patch on its head, and because that patch echoes the red sun of the Japanese flag it is a favourite in Japan. These are names for real fish rather than tattoo meanings. They are a good way to tell your artist exactly what you are picturing.

How to choose which reading is yours

The test is the same as for any symbol. Say it out loud. If what comes out is the Dragon Gate story and why it is yours, the tattoo is doing its job. If what comes out is a sentence about a colour chart you half remember, that is a reason to think for another week rather than a reason not to get it.

Worth adding that a koi is one of the few designs where telling people it is “just because I like it” is a completely reasonable answer. It is a beautiful fish and it has been drawn for centuries because it is a beautiful fish.

What it is like to sit for one

Koi are drawn large more often than small, because the scales, the fins and the water around them need room, and a koi shrunk too far loses the detail that made it a koi. A realistic one at palm size is usually a better tattoo than the same design at thumb size.

They suit the shapes that flow: a forearm, an outer thigh, a calf, a shoulder running onto the upper arm, or the classic back and side piece where the water can be drawn around it. Those are mostly comfortable placements, though a piece that wraps onto the ribs or the inner arm crosses into the sharper end of the chart, and a large koi is usually more than one session whatever it sits on.