Angler Sputtlefish

The Angler Sputtlefish is a fully aquatic enemy found in Pikmin Z. Being a species of Sputtlefish, it holds a number of resemblances, except it's darker toned, and has a third extension off of its head to hold a bulb in front of it to lure prey.

Biology
The Angler Sputtlefish is considered as a relative to the standard Sputtlefish, developing into a type of ambush predator, evolving a extension from its forehead. It will not peruse the player, but it will try to catch any prey that wanders in its light. This becomes more effective during the night over the day.
 * Diet: small, aquatic animals
 * Predators: large aquatic carnivores, Fishing Phosbat

Piklopedia Entry
''This species of Sputtlefish has turned from a simple fish to a silent hunter. It can't swim very fast, so it relies on its light to lure prey close, to which it swallows up very quickly. Though, I can see a predator using this light to eat a Angler Sputtlefish as well.''

Strategy
During the day, there's little to worry about over the Angler Sputtlefish, but at night it will try to catch you if you enter its light beam. A simple swarming will quickly due the creature in if it hasn't seen you, but its recommended that you attack from behind if it does, otherwise it'll suck in your Pikmin rather quickly.