Tuna

The Yellowfin Tuna (Thunnus albacares) reachs a maximum size of 450 pounds. Yellowfin have football shaped bodies, dark blue or black above with yellow on the sides and fins tinged in yellow with the finlets yellow. Yellowfin occur in both the Atlantic and Pacific Oceans. Yellowfin Tuna are schooling fish and are the most important commercially of all the tunas. Tuna are pelagics that live in the open oceans of this world. Remarkably the relatively recent addition of deep sea oilrigs has given these open water fish something to relate to even when in 3000′ of water. Schools of tuna will sometime set up residence on the structure for weeks at a time. Tuna are most commonly caught in water at least 500′ deep off the Louisiana coast.

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Feeding Habits: Yellowfin feed on fishes and invertebrates associated with sargassum. This will occur in at the water’s surface in the open ocean. Foods include larval crabs and shrimps, squids, paper nautilus, flyingfish, triggerfish, and jacks.

Reproduction: Yellowfin tuna have a lot of reproductive potential and spawn frequently. They are what we call serial spawners which means that they can spawn nearly every day and they produce millions of eggs each time. Their peak spawning season is during spring and fall.