| Length | 10-15 cm |
| Width | 3-5 cm |
| Thickness | 1-2 cm |
| Weight | 100-200 grams |
| Skin | Dark green or black |
| Flesh color | Pinkish-white |
| Texture | Firm and flaky |
| Smell | Mild fishy aroma |
| Taste | Mild and slightly sweet |
| Bones | Small and easy to remove |
| Fat content | Moderate |
| Calories per 100g | 205 |
| Protein per 100g | 20g |
| Omega-3 fatty acids | High |
| Sodium per 100g | 402mg |
| Cholesterol per 100g | 69mg |