What does skipjack tuna mean in cooking?

skipjack tuna means: This small, 6-8 pound tuna is also known as the “oceanic bone,” “watermelon”, and “Arctic Bonito.” It has light-colored meat that looks similar to yellowfin. This fish is called “katsuo” by the Japanese and “aku” by Hawaiians. “. (in Cooking Dictionary)

What else does skipjack tuna mean?

Tuna is a commercially valuable fish (Katsuwonus pelamis) Suitable for tropical and warm temperate water, with dark stripes at the sides. (in Merlin Dictionary)