Koi Fish

Etymology:

The word "koi" comes from Japanese, simply meaning "carp." It includes both the dull grey fish and the brightly colored varieties. A homophone of koi means "love, affection" and koi are therefore symbols of love and friendship in Japan: a good example is the short story Koi-san by Mukoda Kuniko. Koi tattoos have become a popular trend in North America.