This is pretty cool from the people at the Monterey Bay aquarium. A really ugly fish, but very ingenious to have a head light to attract prey:

http://www.cnn.com/2014/11/23/tech/seadevil-anglerfish-monterey-bay-aquarium/index.html?sr=fb112314blackseadevil11pstorylink

Also interesting that only females have the headlight. The commentary says that the male's only role is to mate as quickly as possible with a female? lol