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
Kathryn (skipjack) Kathryn (skipjack) The Kathryn, a Chesapeake Bay skipjack, was built at Crisfield, Maryland in 1901. Ported at Chance, Maryland, she is reputedly one of the fastest skipjacks on the Bay. She was designated a National Historic Landmark on April 19, 1994. She is one a small number of older skipjacks to survive in working condition. The "Kathryn" is long, wide and draws of water. She is somewhat unusual in having a "soft" chine rather than a "hard", sharply angled chine. "Kathryn" otherwise follows the pattern of a Chesapeake Bay skipjack, with a clipper bow-style cutwater, a sharp convex bow, beamy