sentences:  Some of the most notable commercially important species are orange roughy, alfonsino – harvested by bottom trawling, and deep sea red crab – capture by pots or traps and Patagonian toothfish caught by longlining.Highly migratory fish stocks such as tuna, swordfish, marlin and sharks in the region are covered by the International Commission for the Conservation of Atlantic Tunas (ICCAT).Most of SEAFO fish resources are found in deep waters (greater than 500 m depth) and tend to be slow grower, long-lived, late-matured and therefore could be vulnerable to over–exploitation.