This deep-sea fish takes it name from the fact that it dangles an enticing appendage over its mouth to attract prey
Some are 
pelagic, while others are benthic; some live in the deep sea (e.g., Ceratiidae), 
while... [DOC] [TLE] Deep Sea Anglerfish - Deep Sea Creatures on Sea and Sky [PAR] The deep sea angler, known also as Melanocetus johnsoni, is a ...