This deep-sea fish takes it name from the fact that it dangles an enticing appendage over its mouth to attract prey
These odd-looking creatures are, in fact, two-day-old zebrafish .... 
To attract prey, the scary-looking fish uses a bioluminescent "fishing pole" that... [DOC] [TLE] Fish Textbook - Chapter 33 Mammals [PAR] These fins gave the fishes more control over their movement in the water.