Like in most places on Earth, fish live in large schools at the bottom of the sea, so numbering them is naturally quite difficult. However, it is estimated, that about 30 million fish do live in Antarctic waters.
These aren't any ordinary fish either. They can anti-freeze themselves so the biting coldness of Antarctica doesn't kill them. I'm not sure what the species of fish are, but I know cod is one of them.
in sea
There is no commercial fishing in Antarctica.
fishing fishing
There is no commercial fishing in Antarctica: it is prohibited by the Antarctic Treaty.
There is no commercial fishing in Antarctica.
There is no commercial fishing allowed in the Southern Ocean around Antarctica.
There is no commercial fishing -- thus no 'over-fishing' -- in Antarctica based on the the Antarctic Treaty.
There is no commercial krill fishing in the Southern Ocean that surrounds Antarctica.
There is no commercial fishing in Antarctica.
Earth south of 60 degrees South Latitude, which includes Antarctica, is governed by The Antarctic Treaty, which dedicates the area to science. There is zero fishing in Antarctica, except in pursuit of science.
There is no commercial fishing south of 60 degrees S, which includes the Southern Ocean that surrounds Antarctica.
There is no commercial fishing allowed south of 60 degrees South latitude -- which includes the Southern Ocean that surrounds Antarctica -- meaning there is no threat from commercial fishing.
There is no commercial fishing allowed on earth south of 60 degrees S, which includes the southern ocean that surrounds Antarctica. Over-fishing is not an issue there.