A fish family of more than 200 species, including pompano, amberjack, bar jack, blue runner, crevalle jack, green jack, horse mackerel (not a true mackerel), rainbow runner, rudderfish, trevally, yellow jack and yellowtail. Although some jack species aren't particularly good to eat, many particularly pompano are considered excellent and have a rich, firm, delicately flavored flesh. Jacks are found around the world in the Atlantic, Mediterranean and Pacific.
From The Food Lover's Companion, Fourth edition by Sharon Tyler Herbst and Ron Herbst. Copyright © 2007, 2001, 1995, 1990 by Barron's Educational Series, Inc.