Histoire naturelle des quadrupèdes-ovipares, Paris, Rapet, 1819, natural history, fishes, zoology, This illustration features three distinct types of elongated fish, each showcased in a vertical arrangement. The fish on the left is slender and serpentine, characterized by a smooth body and a pointed snout, suggesting a potential adaptation for burrowing or navigating through tight spaces. The central fish presents a slightly more robust form, with a prominent, rounded head and a finer tail structure, indicative of a different ecological niche. The fish on the right is notable for its more flattened body and textured surface, possibly indicating adaptations for life near the ocean floor. Accompanying the fish are labels detailing their scientific classifications, enhancing the educational value of the illustration.