Well, let’s see. The Tautog can be found in saltwater around Nova Scotia and Georgia, which covers the Atlantic Ocean. The Sheepshead ranges from the mid-Atlantic to Texas. Bluefish can be found in all climates. Hardhead Catfish are found along the western Atlantic Ocean. Halibut can be found in the Pacific and Atlantic Oceans. Atlantic Sharpnose Sharks can be found in the Atlantic Ocean as well. I am horrible with geography and logic, so I may be making a fool of myself here, but I would say that because five of those are mostly found in the Atlantic area, and Bluefish can thrive in any climate, far from where those others can live, my answer is the Bluefish. Though I probably misread something incredibly obvious so my response is foolish. I just have this nagging feeling I missed something here.