Narrowbarred spanish mackerel(Scomberomoros commerson) are a highly prized fish in Koh Tao for their exciting fight and excellent meat. They are year round residents here but best time to catch these fish is from January through October. Common size is between 5 and 15 kilos.
Very closely related to the Atlantic king mackerel(Scomberomorus cavalla) with a few differences. The narrow barred mack has more pronounced vertical stripes, and the flesh is much firmer than the Atlantic king mackerel. Behaviour, techniques used to catch them, and fighting characteristics are identical.
Narrowbarred mackerel are the most expensive local fish. Can be found in fish markets for up to 150baht/kilo which compares to tuna and dolphinfish(50b/kilo), trevallies and snappers(70b/kilo).
Larger fish almost always caught using bait, but smaller fish often caught by jigging offshore.