Yellowfin Tuna (Fresh Ahi Steak)
Fish & Seafood · 9 specs
Direct Answer
Fresh Yellowfin tuna (Thunnus albacares) is a lean predatory pelagic fish. Per 100g raw, it provides 109 kcal, 24.4g protein, 0.49g fat, and 240mg Omega-3 with dense myoglobin creating deep red sashimi-grade steaks.
Source: USDA FoodData Central (FDC ID: 175159) · Last reviewed Aug 28, 2026
Specs
| Energy / Calories | 109 kcal |
| Protein | 24.4 g |
| Total Fat | 0.49 g |
| Omega-3 (EPA + DHA) | 240 mg |
| Saturated Fat | 0.13 g |
| Cholesterol | 39.0 mg |
| Mercury Level | Moderate (~0.35 PPM) |
| Potassium | 444 mg |
| USDA Safe Internal Temp | 63°C (145°F) (Rare-seared ahi, ~46°C/115°F, is common but below the FDA-recommended minimum -- relies on the fish being sushi/sashimi-grade and previously frozen to control parasites, which does not address bacterial safety) |
Ahi Steak Searing
Due to its ultra-lean nature, fresh yellowfin tuna becomes dry if fully cooked through; it is conventionally hard-seared on the exterior while remaining raw/rare in the core.
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