This is a vintage watercolor and ink drawing of a fish, likely a scientific illustration. The fish is depicted in profile, with a slightly elongated, rounded body. It has a prominent dorsal fin, a rounded tail fin, and pectoral and pelvic fins. The fish is covered in small, delicate dots, suggesting scales. A distinctive feature is a cluster of dark purple spots on its side. The fish is colored with a light wash of color, with a yellowish hue. The drawing is on a cream-colored paper, and there are handwritten notes and labels around the fish, likely describing its species and characteristics. The text is in a cursive script and appears to be in Latin or another scientific language. The overall style is detailed and precise, typical of scientific illustrations from the 19th century. The date 'Sept 6 1839' is visible in the bottom right corner.