Indo-Pacific sailfish
The Indo-Pacific sailfish, Istiophorus platypterus, is a sailfish native to the Indian and Pacific Oceans. It is dark blue on top, brown-blue laterally, silvery white underbelly; upper jaw elongated in form of spear; first dorsal fin greatly enlarged in the form of a sail, with many black spots, its front squared off, highest at its midpoint;   pelvic fins very narrow, reaching almost to the anus; body covered with embedded scales, blunt at end; lateral line curved above pectoral fin, then straight to base of tail.they have a large and sharp bill, that they use for hunting. They feed on tuna and mackerel, some of the fastest fish in the Ocean.The reason that they are some of the fastest fish in the ocean is because there top speed is about 76.5 MPH.