A Huge Marlin from the Nevagivup Archives

Well here is an interesting picture. The fish is huge but yours truly can’t tell if it is a Blue or Black Marlin. As you can see the head has been ravaged by a shark which has removed the starboard pectoral fin. As one of the main discerning factors between a black or blue is the fact that black marlin have rigid pectoral fins, I cannot tell. Can you help me Charles?