Fresh wild-caught ahi tuna, sold by the pound, available from Costco's seafood department. Ahi tuna encompasses two species — yellowfin (Thunnus albacares) and bigeye (Thunnus obesus) — both prized for their firm, meaty texture and rich, clean flavor. The deep-red flesh is ideal for sashimi, sushi, poke bowls, and seared preparations.

Wild-caught ahi tuna is a lean, high-protein fish with a mild, slightly savory taste that pairs well with sesame, citrus, soy, and fresh herbs. Because it is sold fresh rather than frozen, it is best consumed within one to two days of purchase and should be stored between 32°F and 38°F. For raw preparations, ensure the fish has been previously frozen or is labeled sashimi-grade.

Ahi tuna is an excellent source of protein, omega-3 fatty acids, vitamin B12, selenium, and niacin. As with all large pelagic fish, consumption should be moderated in accordance with FDA guidelines regarding mercury, particularly for pregnant women and young children.