This is a medieval manuscript illumination. The central focus is a large, silvery fish swimming towards the left. On top of the fish is a large, oval, egg-like structure, possibly a bubble or a shell. Inside this structure, a man stands on a green surface, seemingly within the bubble. He is wearing a red robe and a green hat, and appears to be holding something in his hands. Around the central scene, several smaller fish are swimming in a light blue background. The manuscript is filled with dense, handwritten text in an old German script. The overall style is characteristic of medieval illuminated manuscripts, with flat colors, stylized figures, and a focus on symbolic representation.