Wolfman wrote:
"I doubt that Climatic change affects the Bigeye, they're very deep swimming fish."

You may well be correct in your conclusion but not for the reason you cite.

Almost all marine life starts at the surface: The sole exception, of which I am aware, being life fueled by undersea thermal activity.

If warming is affecting the surface then changes will percolate downward eventually affecting all lifeforms in some manner.

DA Morgan