Tuna is a large saltwater fish belonging to the mackerel family, known for its powerful body and exceptional swimming speed. Also commonly referred to as tuna fish, it is widely consumed around the world due to its firm flesh, high protein content, and distinctive flavor.
Physical Characteristics and Habitat
- Its body is long, powerful, muscular, and well adapted for fast swimming.
- Its back is dark blue or navy blue, its sides are silvery gray, and its belly is lighter in color.
- Its size and weight vary depending on the species; some tuna species can grow to very large sizes.
- It is a predatory fish that feeds on small fish, squid, crustaceans, and other marine organisms.
- It generally lives in open seas and in temperate or warm waters.
- It is found in the Mediterranean Sea, the Aegean Sea, the Atlantic Ocean, and other major ocean regions.
- It can undertake long-distance migrations for feeding and reproduction.
- Its flesh is reddish or dark pink, firm in texture, and rich in protein.
Tuna Calorie Content
100 grams of raw tuna contains approximately 109 kcal. A 150-gram serving provides approximately 164 kcal of energy. Tuna is a nutritious seafood that contains no carbohydrates and is high in protein.
| Nutritional Value | Per 100 Grams | 1 Serving (150 g) | Daily Value per 100 Grams* |
|---|---|---|---|
| Calories | 109 kcal | 164 kcal | 5.5% |
| Carbohydrates | 0 g | 0 g | 0% |
| Fiber | 0 g | 0 g | 0% |
| Protein | 24.4 g | 36.6 g | 48.8% |
| Fat | 0.5 g | 0.8 g | 0.8% |
| Cholesterol | 39 mg | 58.5 mg | 13% |
| Vitamin A | 18 IU | 27 IU | 0.4% |
| Vitamin C | 0 mg | 0 mg | 0% |
| Potassium | 441 mg | 661.5 mg | 12.6% |
| Calcium | 4 mg | 6 mg | 0.4% |
| Iron | 0.8 mg | 1.2 mg | 4.4% |
*Daily values are calculated based on an average 2,000-calorie diet. Nutritional values are approximate and may vary depending on the species of tuna, season, fat content, storage conditions, and cooking method.
