Scomber japonicus Houttuyn, 1782 .

Chub Mackerel, Pacific Chub Mackerel, or Pacific Mackerel. To nearly 63.5 cm (25 in) TL (Fitch 1956). Western Pacific Ocean north to Japan (Collette and Nauen 1983), southern Kuril Islands (Savinykh 1998), and south-eastern Kamchatka (Sheiko and Fedorov 2000); western Gulf of Alaska (Mecklenburg et al. 2002) to Gulf of California (Castro Hernández and Santana Ortega 2000) to Chile (Robertson and Allen 2015), including Islas Galápagos (Collette and Nauen 1983). Coastal pelagic to epipelagic or mesopelagic over continental slope; depth: surface (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California) to about 300 m (984 ft) (Collette and Nauen 1983); sometimes near shore in surf (Love et al. 2005). Previously treated as conspecific with Scomber colias Gmelin, 1789, of the Atlantic (Collette 1999, 2003).