The anglerfish uses an electric bulb as bait

The deep-sea anglerfish has long filaments with a light on the end, which dangles over the top of its head. Other fish mistake the light for food and swim into the anglerfish’s huge mouth. The anglerfish is able to produce chemicals that allow it to give off light or a glow. This is called bioluminescence. With its enormous mouth and expandable stomach, an anglerfish can swallow other fish as large as itself.