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Koi fish tattoo meaning
By Inkjong · 14 November 2026
In Japanese tattooing the koi stands for courage, perseverance and the strength to fight your way upstream. It is one of the most loved irezumi designs, and it swims across our mahjong tiles and the koi mahjong bag.
The legend of the Dragon Gate
The koi's meaning comes from an old Chinese legend. Koi swam up the Yellow River against the current, and the few that leapt the waterfall at the top, the Dragon Gate, were turned into dragons. The story spread to Japan, and the koi became a symbol of effort rewarded and of rising above hardship.
That is why a koi and a dragon are often tattooed together, or why a koi tattoo can be read as a person still on their way up.
What koi colours mean
Tattoo artists and collectors often give the colours their own meanings, though these vary between artists:
Red koi are linked with love, strength and bravery. Black koi are often tied to overcoming hard times. Gold or yellow koi suggest wealth and good fortune. Blue koi are associated with calm and with boys and sons in some traditions.
Which way the koi swims
In tattoo tradition, a koi swimming upstream (head up) is often read as someone still fighting their battles. A koi swimming downstream (head down) is often read as someone who has already come through them. Ask your artist; this is lore, not a fixed rule.
Koi in irezumi
In traditional Japanese tattooing koi are usually set in swirling water, often with maple leaves, cherry blossom or peonies, and they can fill a full back or sleeve. The bold outlines and wind bars around them are what give irezumi its strong, flowing look.
Koi on the Inkjong table
The Koi collection is planned as a future Inkjong drop, and the koi already appears on our showpiece tiles and the koi mahjong bag.