The Japanese believe carp & koi fish bring good fortune. Introduce koi fish elements into your home to capture some of that luck. Koi fish are actually ornamental varieties of domesticated carp that were developed in ancient Japan and are often kept in outdoor ponds and water gardens. Koi have long held a place in the fine art world. Examples include Japanese painter Utagawa (Ando) Hiroshige and wildlife photographers like Joel Sartore who have captured beautiful images of koi fish that make stunning art pieces. The richly colored koi fish are often depicted swimming in a group, which lends a sense of movement to your wall decor.