This is a vintage Japanese woodblock print depicting a fantastical scene. A man is riding a large, red koi fish through turbulent waves. The man is dressed in traditional Japanese clothing, a green robe and a black hat adorned with a crest. He appears to be embracing the fish, holding onto its scales. The koi fish is intricately detailed with textured scales and a flowing tail. The waves are depicted with dynamic, swirling brushstrokes in shades of black and gray, creating a sense of movement and energy. In the upper right corner, there is Japanese calligraphy, and in the lower left, a red seal with Japanese characters. The overall style is reminiscent of ukiyo-e, a traditional Japanese art form known for its woodblock prints and depictions of everyday life, landscapes, and mythological subjects.