The Angler Fish is a giant sea monster guardian from the Atlantis theme. It is green with large blue eyes, white teeth (along with a single golden tooth) a lure and movable fins, a jaw and tail. It appeared in the set 7978 Angler Attack. The monster guards a helmet and two crystals.
The helmet that the Angler Fish guards a golden hemet of the same design as the one the Portal Emperor wears.
An earlier Angler fish was released in the Aqua Raiders theme, except it was blue and smaller and it had printed eyes instead of brick eyes.
In The Quest for the Golden King game on LEGO.com, one treasure was a gold tooth called "the lost tooth of Robby the Angler". It is unknown whether this angler's name is Robby or not.