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Class: Actinopterygii
Order: Perciformes
Family: Scombridae

Scombridae is the family of the mackerels, tunas, and bonitos.
Scombrids have two dorsal fins, each of which can be depressed into grooves in the back, and a series of finlets between the rear dorsal fin and anal fin and the tail. The base of the tail is slender, and the caudal fin strongly divided. Primarily swift predators of open seas; some of the smaller species strain zooplankton through their gill rakers.

Example of a Scombridae. This one's a mackerel.

Mode of locomotion is Thunniform:


Most fishes move by generating an undulating wave along their bodies along their bodies that pushes water backwards but thunniform swimmers isolate this movement to the crescent moon-shaped tail (lunate tail) which is much taller narrower and stiffer than that of other fish. Scombrids swim by restricting lateral undulations to the most caudal body segments, but maintain their sizeable red-muscle mass in the......

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Approximate Word Count: 1384
Approximate Pages: 6 (250 words per double-spaced page)

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