Blue Marlin - A Blue Marlin mount from Gray's is an impressive piece of art. Our paint artists have truly mastered the color schemes of this species. We are proud to say that no one else in the world can recreate a more life like reproduction.. The Blue Marlin (Makaira nigricans) is the largest trophy billfish and one of the biggest fish in the world. Common size is around 11 ft. (3.5 m) with a weight around 1.980 lbs. (900 kg) However females can exceed 14 ft.