Skipjack Skipjack tuna are a highly migratory fish that roams all the world’s oceans in tropical and subtropical zones. Skipjack have a dark purple ridge on their back; a bluish sheen on the upper sides and silver white lower sides and belly with four to six dark longitudinal stripes. They do not have scales except around its head and running along their lateral line. Skipjack has a dark red flesh with a medium texture, low moisture and high oil content. They have the most pronounced taste of all of the tropical tunas and when raw, good-quality skipjack meat is deep red. Smaller fish are lighter red. Cooked skipjack becomes light gray. Some sushi markets prefer skipjack tuna because it’s c...