Koi fish tattoos are a popular form of body art, particularly among Asian cultures. They are often seen as a symbol of strength, courage, and perseverance due to their ability to swim upstream against strong currents. They are also believed to represent good fortune, prosperity, and ambition. Some believe that koi can represent individual goals and dreams as they strive towards success. The meaning of a koi fish tattoo can depend heavily on the direction it is swimming, the color of the fish and the specific details incorporated into the design. In general, they are seen as a positive symbol of strength and personal growth.