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The barreleye fish, also know as the spookfish, is native to the tropical and temperate waters of the Atlantic, Pacific, and Indian Oceans. These fish are named for their barrel-shaped, tubular eyes. They live only in very deep ocean water, 400 to 2,500 meters below the surface. The barreleye is very unusual in that it has a transparent head. Play the following videos to learn more about the barreleye fish.