Etymology of Koi

The word 'koi' comes from Japanese, simply meaning "carp." It includes both the dull grey fish and the brightly colored varieties. What are known as 'koi' in English are referred to more specifically as 'nishikigoi' in Japan (literally meaning 'brocaded carp'). In Japanese, 'koi' is a homophone  for another word that means 'affection' or 'love'; koi are therefore symbols of love and friendship in Japan. An example of this is given in a short story by Mukoda Kuniko, "Koi-san". Koi tattoos have also become a popular trend in North America.