A history of the fishes of the British Islands, 1862-65, Great Britain, fishes, This illustration showcases a rock cod, a fish distinguished by its mottled pattern of dark and light scales. The intricate details highlight the contours of its body, with a pronounced head and broad, rounded fins. In the background, a rugged, natural landscape suggests the fish's habitat, featuring rugged rocks and water. The overall composition emphasizes the rock cod's unique features while placing it within its environmental context.