Koi (carp climbing the waterfall)
A carp (koi) leaping up a waterfall is the Japanese picture of effort rewarded: in a Chinese legend, the carp that climbs the falls turns into a dragon. Families fly carp-shaped streamers (koinobori) for their children around 5 May.
Meaning
JAANUS, a dictionary of Japanese art, gives the subject its Japanese name, koi no takinobori, “carp climbing the waterfall”. In the Chinese legend behind it, a carp that swam up a waterfall at the headwaters of the Yellow River became a dragon. JAANUS calls it an auspicious theme, “a parable of effort and success”, and links it to the Boys’ Day festival on the fifth day of the fifth month, when carp streamers are flown. Edo-period artists painted it, Maruyama Ōkyo among them (his version is at Daijōji in Hyōgo prefecture), and ukiyo-e printmakers put it in prints. The carp and its streamers belong to Japanese family custom today, on what is now Children’s Day.
Origin and history
The legend comes in more than one version. JAANUS puts the waterfall at the headwaters of the Yellow River. Henri Joly, cataloguing Japanese art in 1908, tells of a sturgeon of the Yellow River that swam upstream, crossed the rapids of the Dragon Gate (Longmen) on the third day of the third month, and itself became a dragon. Nippon.com’s version has the carp climb a swift stream to the gates of heaven. In Joly’s catalogue the carp is also an attribute of the god Ebisu and of the sages Kinkō and Kensu.
Carp streamers on Children’s Day
Nippon.com describes koinobori as large, many-coloured windsocks made to look like swimming carp, the most prominent outdoor decoration of the festival. The custom began in the Edo period and draws on the legend of the carp that became a dragon: the streamers are hung in the hope that children, like the carp, will have the vigour and determination to succeed. 5 May is one of the four national holidays of Golden Week, and nearly every region has a river or park known for flying hundreds of them. For flats, there are small streamers that fit on a balcony.
The dragon it becomes
The carp’s reward is to become a dragon, the water creature of Chinese and Japanese art.
Read next
- Next in Japanese symbolsCrane (tsuru) and the thousand paper cranesIn Japan the crane (tsuru) is an emblem of long life. A thousand folded paper cranes (senbazuru) are a wish for a sick person to recover, and since Sadako Sasaki, who folded them in Hiroshima in 1955, a wish for peace.
- The same shape in Andean and Inca symbolsInti Raymi (festival of the sun)The Inca festival of the sun, held at the June solstice in Cusco. Banned under Spanish rule, it was revived in 1944 and is staged every 24 June at the Coricancha, the main square and Sacsayhuamán.
See also
Japanese dragon (ryū), Torii (shrine gate), Komainu (guardian lion-dogs), Amaterasu (the sun kami), Raijin and Fūjin (thunder and wind), Kamon (family crests) and the mitsudomoe.
Sources
- koi-no-takinobori (JAANUS), JAANUS: Japanese Architecture and Art Net Users System, “koi-no-takinobori”, JAANUS (Japanese Architecture and Art Net Users System), entry text
- Henri L. Joly, Legend in Japanese Art (1908), Henri L. Joly, Legend in Japanese Art: A Description of Historical Episodes, Legendary Characters, Folk-lore, Myths, Religious Symbolism Illustrated in the Arts of Old Japan, London: John Lane, 1908, John Lane (Internet Archive, University of Toronto copy), no. 101, “Carp”
- Nippon.com, Children’s Day: Carp Streamers and Samurai Traditions, “Children’s Day: Carp Streamers and Samurai Traditions”, Japan Glances, Nippon.com (Nippon Communications Foundation), 3 May 2026, Nippon.com, “Armor and Carp Streamers to Ensure Health and Prosperity”
The same shape elsewhere
Browse symbols formed from curves and waves or lines.
Researched, edited and approved by Rory Hansen before publishing. Last reviewed October 10, 2026. How we research
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