Boston, Journal of Natural History, Boston Society of Natural History., The illustration showcases three distinct types of fish. On the left, a slender fish with elongated body and pronounced fins. In the center, a more serpentine fish featuring a smooth, curved shape with spots along its back. On the right, a smaller fish that is also elongated but has a more traditional shape with defined features. Each specimen is rendered with detailed outlines and labeling, highlighting the unique characteristics of their anatomy, emphasizing the diversity found in aquatic life.