That's a sailfish. Pacific sails get a lot bigger than ours. Reg told me that one was the biggest one recorded in the Hawaiin chain in the three years up to when he caught it. He sent me a poor picture of another he caught and was able to release that was also huge. His biggest wahoo was 58 lbs. He catches a lot of them as well as dolphin and a couple different kinds of smaller varieties of tuna, big grey snapper, giant travalle and other fish he only knows the Hawaiian names for.