Pacific mackerel grow fast, up to 25 inches and more than 6 pounds. They can live up to 18 years but are able to reproduce by age 4, and sometimes as early as age 1. … Various larger fish (such as sharks and tunas), marine mammals, and seabirds eat Pacific mackerel. Pacific mackerel school as a defense against predators
U.S. wild-caught Pacific mackerel is a smart seafood choice because it is sustainably managed and responsibly harvested under U.S. regulations.