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The Anglerfish is a mutated angler fish that has been heavily disfigured by the Structure Gel leaks, losing its eyes while undergoing some other heavy mutations.
The Anglerfish also has a mutated human face merged into the left side of its head, along with a skeletal human hand replacing its left fin, although the face is difficult to see due to the lack of lighting and the fact that it is difficult to get close without losing consciousness (or dying). The right side is also completely missing the eye contained within its eye socket along with the orbital cavity itself. It is possible that the fused human face and hand belong to one of its previous victims and has been merged into the Anglerfish by the WAU.
The WAU has also altered its behavior, making it avoid light, while at the same time it tries to bait unsuspecting intruders with its light source.
According to a log regarding the creature, it no longer hunts for normal prey like small fish, but rather "something not present in its ecosystem", which in this case heavily implies the Abyss site's crew and even Simon himself.
The anglerfish will lie extremely still and attempt to bait others to go near the light it is producing. If Simon sees the anglerfish's body it will begin to swim towards Simon. If Simon gets too close to the anglerfish it will attack him and knock him out or kill him. The anglerfish was reprogrammed by the WAU to not go near lights and will swim away if it gets in proximity with a light.
In order to reach Site Tau, Simon has to follow torches leading to a cavern in order not to be attacked by any deep-sea creatures. If Simon manages to follow the light sources and make his way to the cave, he must follow the path of chemlights to the opposite side of the tunnel inside the cave.
There, he must locate and follow the torches again, but the Anglerfish lies in wait as the first light source primarily visible to Simon, baiting him to come near its light source. If Simon encounters the fish and keeps it at a distance, it slowly swims towards him.
In this event, Simon should retreat to the chemlights inside the cave and wait for the creature to back out, then quickly run to the nearby light source.
According to data collected from the populations of different species in 2100 forwards, this particular species is identified. For some reason, the rest of the Anglerfish's data is unable to be viewed.
- Centrophryne spinulosa is commonly known as the horned lanternfish.