As they settle on the seafloor, the fish shifts into a strongly dorsoventrally flattened body form and develops mottled brown to green‑brown or reddish tones that blend with sandy or muddy substrates. At the same time, the first spine on its back changes into a fishing‑rod‑like lure. This lure sits near the front of the head and ends in a small, fleshy, leaf-shaped tip that the fish uses to attract prey.