It has an air bladder but is usually much like the prevalent mackerel. The Pacific chub mackerel is caught in considerable quantities from the Coastline of California, whilst the Atlantic chub mackerel is greatly dispersed together both of those coasts from the North and South Atlantic. Atlantic and Pacific mackerel https://atlanticmackerelinmalayal91102.tinyblogging.com/the-atlantic-mackerel-fish-diaries-75521886