Fish
Antarctic Rockcod
Notothenia coriiceps · also called black rockcod
Tolerating a broader range of water temperatures than many of its Antarctic relatives, an Antarctic rockcod has become one of the most closely studied fish species around the Antarctic Peninsula, offering researchers a window into how cold-adapted life might cope with a warming Southern Ocean.
Overview
The Antarctic rockcod, Notothenia coriiceps, is a Least Concern fish native to ocean and polar habitat across the Antarctic Peninsula and nearby subantarctic islands. Its status as a key research species, its unusually broad temperature tolerance, and its abundance in shallow rocky coastal habitat make it one of the more scientifically important fish species found anywhere in Antarctic waters.
A fish that copes better than most with change
While many Antarctic fish are so narrowly adapted to stable cold water that even small temperature shifts pose a serious threat, the Antarctic rockcod has shown a notably wider tolerance, making it a valuable species for scientists trying to understand how Southern Ocean life might respond to future warming.
Status
Least Concern, remaining abundant across suitable shallow coastal habitat around the Antarctic Peninsula.
Antarctic Rockcod: common questions
Why is the Antarctic rockcod so frequently studied?
This species is one of the most commonly studied fish species around the Antarctic Peninsula, frequently used in research on cold-water physiology and adaptation to a changing Southern Ocean.
How does the Antarctic rockcod's temperature tolerance compare with other Antarctic fish?
This species tolerates a wider range of water temperatures than many of its more narrowly specialised Antarctic relatives, a trait of particular scientific interest amid ocean warming.
Why is the Antarctic rockcod sometimes called the black rockcod?
This species has a notably dark, almost black colouration, a feature that gives it one of its alternative common names.
What kind of habitat does the Antarctic rockcod prefer?
This species favours shallow, rocky coastal habitat around the Antarctic Peninsula, rather than the deeper continental shelf waters used by some related fish species.