Skipjack tuna important prey species for sharks and large pelagic fishes and is often used as live bait when fishing for Marlin. It has no scales, except on the lateral line and the corselet (a band of large, thick scales forming a circle around the body behind the head). It commonly reaches fork lengths up to and a weight of . Its maximum fork length is and maximum weight is . Ageing skipjack tuna is difficult, and the estimates of its potential lifespan range between 8 and 12 years. Skipjack tuna is a batch spawner. Spawning occurs year-round in equatorial waters, but
USS Skipjack (SS-184) raised and towed to Mare Island. On 11 August 1948, she was again sunk as a target off the coast of California by aircraft rockets. Her name was stricken from the Naval Vessel Register on 13 September 1948. "Skipjack" received seven battle stars for World War II service. USS Skipjack (SS-184) USS "Skipjack" (SS-184), a "Salmon"-class submarine, was the second ship of the United States Navy to be named after the fish. Her keel was laid down by the Electric Boat Company in Groton, Connecticut, on 22 July 1936. She was launched on 23 October 1937 sponsored by Miss Frances