Anglerfish

The Anglerfish is one of the minor antagonists in Finding Nemo.

Role in the film
In Finding Nemo, the anglerfish entices Marlin and Dory in a dark chasm with its glowing dorsal fin before chasing them, as the two fish try to search for P. Sherman's diving mask.

After the credits of the movie, the anglerfish is eaten by Blenny (who overcomes his fear of sharks and other scary fish) in a single bite.

Trivia

 * The anglerfish is most likely female, as only females possess the glowing bait that characterizes the species. They are also larger and more dangerous than males.
 * The anglerfish appears in Up during Carl and Muntz's fight when Muntz strikes one of his exhibits with his sword.