This is a vintage illustration of a fish, likely a scientific or anatomical drawing. The fish is depicted in profile, with a rounded, somewhat boxy body shape. It's a warm brown color, with subtle shading to indicate form. The fish has a small, round eye and a slightly downturned mouth. Its fins are delicate and translucent, rendered with fine lines. Around the fish are several small, detailed drawings of what appear to be cross-sections or internal structures, possibly of the fish's eye or other organs. These are also rendered in brown ink and are quite intricate. The background is a pale, creamy yellow, and the entire image has a slightly aged, antique quality. There's handwritten text at the bottom of the image, likely the scientific name of the fish, and a number '141' in the top right corner. The style suggests a natural history illustration from the 19th or early 20th century.