The Viper-mouth (Silurus cataphractus)
1737
ink
From the collection of National Gallery of Art
1737
ink
From the collection of National Gallery of Art
This drawing shows two strange fish side by side. The top one is wide and flat, with a big mouth full of sharp teeth and spiky fins along its back. Its tail is fan-shaped, and its skin looks rough. The bottom fish is long and thin, with a small head, big eyes, and a mouth full of needle-like teeth—it even has tiny legs near its head. The artist focused on every detail, like the tiny scales and the way the fins stick out. These drawings were made to help scientists study real animals. Next, check out the technique: etching to see how artists like this made precise lines.