Koi are a legendary fish. Graceful, vibrant, and one of the most recognizable fish in the world, koi are well-loved and respected. Often associated with Japan, koi actually originated from Central Asia in China. They were introduced to Japan by Chinese invaders. The koi got their name around 500 B.C, but the fish itself has been around for much longer. Fossils of ancient koi date back 20 million years. Natural genetic mutation brought about the brilliant colors in koi known today, and in the early 1800s Japanese farmers began keeping them for aesthetics. Over the years, koi fish meaning and symbolism has become iconic around the world.