Linked from
The 24 pages that link to Anglerfish, each with the reason it gives.
BioluminescenceBroader topic: Its light functions as bait in the darkness of the deep sea.
Ambush predationBroader topic: Deep-sea forms use a lure to bring prey within striking distance.
Ambush predatorBroader topic: Some use a lure to draw prey within striking distance in dark water.
Pelvic finBroader topic: Some anglerfish use limb-like pelvic fins to rest or move along the bottom.