Global Endemism: All species, TEP non-endemic, Indo-Pacific only (Indian + Pacific Oceans), "Transpacific" (East + Central &/or West Pacific), West + East Pacific (but not Central)
Regional Endemism: All species, Eastern Pacific non-endemic, Tropical Eastern Pacific (TEP) non-endemic, Temperate Eastern Pacific, primarily, California + Peruvian provinces, primarily, Continent + Island (s), Continent, Island (s)
Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California), Northern Subtropical (Cortez Province + Sinaloan Gap), Northern Tropical (Mexican Province to Nicaragua + Revillagigedos), Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo), South Temperate (Peruvian Province )
This species is widespread in the Pacific Ocean. In the Eastern Pacific, it ranges from Alaska to the Gulf of California and central Mexico, including the Revillagigedo Islands. It also occurs from Panama to southern Chile (45,41'S), including the Cocos, Malpelo and the Galpagos Archipelago.
Indo-Pacific: anti-tropical, absent from the Indian Ocean except for South Africa, KZN to Western Cape (58304). Replaced by Scomber colias Gmelin 1789 in the Atlantic. Scomber australasicus is found in the Red Sea and the northern Indian Ocean (Ref. 27328).
This is a coastal pelagic species, that is to a lesser extent epipelagic to mesopelagic, over the continental slope. It is found to depths of 300 m. Schooling by size is well developed and initiates at approximately 3 cm (Collette and Nauen 1983). It may also form schools with Sarda chiliensis, Trachurus symmetricus and Sardinops sagax (Collette 1995). This species stays near the bottom during the day and goes up to the open water at night (Maigret and Ly 1986) where it feeds on copepods and other crustaceans, fishes and squid (Collette and Nauen 1983).
Spawning most often occurs at water temperatures of 1520C. This species spawns in several batches, with 250300 eggs per gram of fish, with the total number of eggs per female ranging from 100,000400,000.
This species has an average longevity of approximately seven years (Caramantin-Soriano et al. 2008), although longevity can be as high as 14 years based on size-frequency growth studies in the USA and Mexico (Dorval et al. 2007). Age of first maturity is approximately 24 years (Watanabe and Yatzu 2006, Gluyas-Milln and Quionez-Velzquez 1996). Generation length is therefore is estimated to be 46 years.
Maximum Size is 64 cm total length (TL). The all-tackle angling record is of a 2.17 kg fish caught off Guadalupe Island, Mexico in 1986 (IGFA 2011).