The Scombridae family includes marine fish found mainly in tropical, subtropical, and temperate seas. It comprises tuna, mackerel, bonitos, and wahoo. Recognized by their streamlined bodies, deeply forked tails, and fins adapted for fast swimming, these fish generally live in open water. Tuna and many other species are active predators that feed on fish, crustaceans, and squid, while mackerel also feed on plankton. Important to both commercial and recreational fisheries, scombrids play a major role in marine food webs.