Low Calorie Fish & Seafood: The Complete List
Browse nutrition data for fish and seafood. These foods are valued for their protein content, omega-3 fatty acids, and essential minerals. Within Fish & Seafood, portion size and how a dish is prepared make the biggest difference to whether it stays in a low-calorie range, two very similar-looking dishes can differ substantially.
A food or drink qualifies as Low Calorie here using the real UK/EU regulated "low energy" claim thresholds: 40kcal or less per 100g for a solid food, or 20kcal or less per 100ml for a drink. Showing 8 fish & seafood foods that qualify, sorted by lowest first.
| Food | kcal | Protein | Fat |
|---|---|---|---|
| Samphire (Farmed) | 18 | 1.5g | 0.3g |
| Samphire (Wild) | 20 | 1.5g | 0.4g |
| Sea Lettuce (raw) | 25 | 2.6g | 0.3g |
| Sea Spaghetti (raw) | 27 | 1.5g | 0.2g |
| Carrageen (Irish Moss, fresh) | 30 | 1.5g | 0.3g |
| Nori (dried seaweed) | 35 | 5.8g | 0.3g |
| Cockles (in Shell, Live) | 36 | 8.5g | 0.3g |
| Sea Cucumber (raw) | 38 | 6.4g | 0.2g |
All values are per 100g. See every Low Calorie food across all categories on the Low Calorie Foods hub, or every food in this category on the Fish & Seafood page.
Other Ways to Filter Fish & Seafood
Low Calorie Fish & Seafood: A Closer Look
Of the 8 fish & seafood foods that qualify as Low Calorie in our database, Samphire (Farmed) stands out most at 18kcal per 100g, while Sea Cucumber (raw) narrowly clears the threshold at 38kcal per 100g.
Of the 246 real fish & seafood foods in our database, 8 (3%) meet the Low Calorie threshold, worth knowing before assuming any given fish & seafood item automatically qualifies.
Planning meals built around Low Calorie Fish & Seafood gets a lot easier once you can see a real running total, not just an estimate. Our nutrition value calculator handles that part.