The image is a vintage-style drawing or illustration of a pufferfish. The fish is depicted in profile, facing to the right. It has a rounded, somewhat pear-shaped body covered in small dots, suggesting scales or texture. The fish's eye is large and prominent. It has a small mouth and a slightly pointed snout. The fins are delicately drawn, with the pectoral, dorsal, and anal fins clearly visible. The caudal fin is fan-shaped. Above and below the fish are sketches of what appear to be seaweed or aquatic plants. The background is a pale yellow or beige, giving the image an aged appearance. There is a number '151' in the upper right corner and a signature or inscription 'J.H.Haldane' in the lower right corner. The style of the drawing suggests it may be a scientific illustration or a piece from a natural history collection.