Koi fish are ornamental fish that have been a part of human culture for centuries. Originating from domesticated common carp, they are known for their vibrant colors and distinctive patterns. Koi fish are often kept in ponds and are admired for their beauty and symbolic meanings. In many cultures, koi are associated with good fortune, prosperity, and perseverance. They are also a popular subject in art and literature, representing strength and determination. With proper care, koi can live for many years, becoming a long-lasting companion. Their graceful movements and striking appearance make them a joy to behold.