Eventually, she gets caught in the mask around a rock, immobilizing her, but not before attempting one last bite at Marlin and Dory. The Anglerfish entices Marlin and Dory in a dark chasm with her glowing dorsal fin before chasing them, as the two fish try to search for P.
After the prey are draw near enough by its light without noticing they are approaching a predator, it aggressively attacks them while trying to capture and eat their food. It uses the bioluminescence to lure its food, mostly smaller fish.
The Anglerfish is a territorial deep-sea fish that, like any other abyssopelagic animal, has the ability of bioluminescence, which is a common characteristic among deep-sea creatures.
