This pelagic and oceanodromous species is found in offshore waters to depths of 260 m. It exhibits a strong tendency to school in surface waters with birds, drifting objects, sharks, and whales. It feeds on fish, crustaceans, cephalopods, and molluscs and is preyed upon by large pelagic fishes (Kailola et al. 1993). In the western Atlantic, it is commonly found in mixed schools with Blackfin Tuna, Thunnus atlanticus.This species is very fast-growing, short-lived, and very fecund. Its maximum fork length is 111 cm (Bayliff 1988) and longevity is estimated to be between 6-“8 years (Garcia-Coll et al. 1985, Collette 2010). The age of first maturity is estimated to be 1.5 years (Maunder and Harley 2005) with a fork length at first maturity of 40-“55 cm, depending on the area (Collette and Nauen 1983, Matsumoto et al. 1984, Cayre and Farrugio 1986, Wild and Hampton 1994, Stequert and Ramcharrun 1996, Schaefer 2001). This species spawns several times per season in batches (Erdman 1977, Collette 2010). When applying an age at first reproduction of 1.5 years and longevity of 7 years, its estimated generation length is 4.25 years based on the following equation recommended by the IUCN Red List methods: Age at first reproduction + (Age at last reproduction -“ age at first reproduction)/2.