Low-Sodium Seafood Guide

27 items classified under standard Low-Sodium guidelines.

This guide covers all 27 seafood classified under Low-Sodium guidelines. Low-Sodium evaluates foods primarily by sodium content per serving, which determines how each item in this category is classified.

Quick Reference

Food Status Sodium (per 100g)
Anchovies Allowed 3668mg
Calamari Allowed 377mg
Catfish Allowed 43mg
Clams Allowed 56mg
Cod Allowed 54mg
Crab Allowed 395mg
Halibut Allowed 68mg
Lobster Allowed 535mg
Mahi Mahi Allowed 88mg
Mussels Allowed 362mg
Oysters Allowed 85mg
Salmon Allowed 507mg
Sardines Allowed 307mg
Scallops Allowed 466mg
Sea Bass Allowed 68mg
Shrimp Allowed 571mg
Sushi Allowed 428mg
Swordfish Allowed 90mg
Tilapia Allowed 52mg
Trout Allowed 52mg
Tuna Allowed 372mg
Canned Salmon Limited 378mg
Canned Tuna Limited 219mg
Canned Tuna in Oil Limited 416mg
Canned Tuna in Water Limited 377mg
Smoked Salmon Limited 672mg
Fish Sticks Not Allowed 402mg

Classification Breakdown

21 Allowed — These seafood are naturally low in sodium. 5 Limited — These items have sodium content that varies enormously by brand or preparation. 1 Not Allowed — These are high enough in sodium that a single serving uses a substantial fraction of a daily allowance.

About 70–75% of dietary sodium comes from packaged and restaurant food, not the salt shaker.

Allowed Seafood (21)

Anchovies

Allowed

With 3668mg sodium per 100g, Anchovies earns a Allowed classification on Low-Sodium. It is naturally low in sodium. Beyond the primary classification, anchovies also provides 28.9g protein and 9.7g fat per 100g. It ranks among the highest in this category for sodium. The nearest lower option is Smoked Salmon at 672mg.

Per 100g · Source: USDA FoodData Central

210kcalCalories
28.9gProtein
9.7gFat
0gCarbs
3668mgSodium

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Calamari

Allowed

At 377mg sodium per 100g, Calamari falls into the Allowed category under Low-Sodium guidelines. The classification reflects that it is naturally low in sodium. Nutritionally, it also delivers 13.8g protein and 13.2g fat per serving. Within this category, it falls between Tuna and Canned Tuna in Water for sodium, ranking 15 of 27.

Per 100g · Source: USDA FoodData Central

234kcalCalories
13.8gProtein
13.2gFat
14.1gCarbs
377mgSodium

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Catfish

Allowed

Catfish is classified as Allowed on Low-Sodium, with 43mg sodium per 100g. This means it is naturally low in sodium. It also contains 16.4g protein, which may factor into overall meal planning. Among the 27 items in this category, catfish sits at the low end for sodium — next closest is Tilapia at 52mg.

Per 100g · Source: USDA FoodData Central

95kcalCalories
16.4gProtein
2.8gFat
0gCarbs
43mgSodium

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Clams

Allowed

Clams is classified as Allowed on Low-Sodium, with 56mg sodium per 100g. This means it is naturally low in sodium. It also contains 14.7g protein, which may factor into overall meal planning. Among the 27 items in this category, clams sits at the low end for sodium — next closest is Halibut at 68mg.

Per 100g · Source: USDA FoodData Central

86kcalCalories
14.7gProtein
1gFat
3.6gCarbs
56mgSodium

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Cod

Allowed

At 54mg sodium per 100g, Cod falls into the Allowed category under Low-Sodium guidelines. It is naturally low in sodium. Beyond the primary classification, cod also provides 17.8g protein per 100g. Among the 27 items in this category, cod sits at the low end for sodium — next closest is Clams at 56mg.

Per 100g · Source: USDA FoodData Central

VariantCaloriesProteinFatCarbsSodium
Atlantic (raw)82kcal17.8g0.7g0g54mg
Pacific (raw)84kcal20.4g0.3g0g134mg

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Crab

Allowed

With 395mg sodium per 100g, Crab earns a Allowed classification on Low-Sodium. This means it is naturally low in sodium. It also contains 17.9g protein, which may factor into overall meal planning. Within this category, it falls between Canned Salmon and Fish Sticks for sodium, ranking 18 of 27.

Per 100g · Source: USDA FoodData Central

83kcalCalories
17.9gProtein
0.7gFat
0gCarbs
395mgSodium

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Halibut

Allowed

At 68mg sodium per 100g, Halibut falls into the Allowed category under Low-Sodium guidelines. The classification reflects that it is naturally low in sodium. Nutritionally, it also delivers 18.6g protein per serving. Among the 27 items in this category, halibut sits at the low end for sodium — next closest is Sea Bass at 68mg.

Per 100g · Source: USDA FoodData Central

91kcalCalories
18.6gProtein
1.3gFat
0gCarbs
68mgSodium

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Lobster

Allowed

Lobster is classified as Allowed on Low-Sodium, with 535mg sodium per 100g. This means it is naturally low in sodium. It also contains 20.9g protein, which may factor into overall meal planning. It ranks among the highest in this category for sodium. The nearest lower option is Salmon at 507mg.

Per 100g · Source: USDA FoodData Central

97kcalCalories
20.9gProtein
1gFat
0gCarbs
535mgSodium

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Mahi Mahi

Allowed

Mahi Mahi is classified as Allowed on Low-Sodium, with 88mg sodium per 100g. The classification reflects that it is naturally low in sodium. Nutritionally, it also delivers 18.5g protein per serving. Within this category, it falls between Oysters and Swordfish for sodium, ranking 9 of 27.

Per 100g · Source: USDA FoodData Central

85kcalCalories
18.5gProtein
0.7gFat
0gCarbs
88mgSodium

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Mussels

Allowed

With 362mg sodium per 100g, Mussels earns a Allowed classification on Low-Sodium. It is naturally low in sodium. Beyond the primary classification, mussels also provides 15.1g protein per 100g. Within this category, it falls between Sardines and Tuna for sodium, ranking 13 of 27.

Per 100g · Source: USDA FoodData Central

109kcalCalories
15.1gProtein
2.8gFat
4.7gCarbs
362mgSodium

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Oysters

Allowed

At 85mg sodium per 100g, Oysters falls into the Allowed category under Low-Sodium guidelines. It is naturally low in sodium. Beyond the primary classification, oysters also provides 5.7g protein per 100g. Within this category, it falls between Sea Bass and Mahi Mahi for sodium, ranking 8 of 27.

Per 100g · Source: USDA FoodData Central

51kcalCalories
5.7gProtein
1.7gFat
2.7gCarbs
85mgSodium

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Salmon

Allowed

With 507mg sodium per 100g, Salmon earns a Allowed classification on Low-Sodium. This means it is naturally low in sodium. It also contains 10.8g protein and 17.4g fat, which may factor into overall meal planning. It ranks among the highest in this category for sodium. The nearest lower option is Scallops at 466mg.

Per 100g · Source: USDA FoodData Central

VariantCaloriesProteinFatCarbsSodium
Atlantic (raw)142kcal19.8g6.3g0g44mg
Atlantic (farmed, raw)208kcal20.4g13.4g0g59mg

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Sardines

Allowed

With 307mg sodium per 100g, Sardines earns a Allowed classification on Low-Sodium. This means it is naturally low in sodium. It also contains 24.6g protein and 11.5g fat, which may factor into overall meal planning. Within this category, it falls between Canned Tuna and Mussels for sodium, ranking 12 of 27.

Per 100g · Source: USDA FoodData Central

208kcalCalories
24.6gProtein
11.5gFat
0gCarbs
307mgSodium

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Scallops

Allowed

At 466mg sodium per 100g, Scallops falls into the Allowed category under Low-Sodium guidelines. It is naturally low in sodium. Beyond the primary classification, scallops also provides 11.1g protein and 12.5g fat per 100g. It ranks among the highest in this category for sodium. The nearest lower option is Sushi at 428mg.

Per 100g · Source: USDA FoodData Central

217kcalCalories
11.1gProtein
12.5gFat
14.1gCarbs
466mgSodium

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Sea Bass

Allowed

Sea Bass is classified as Allowed on Low-Sodium, with 68mg sodium per 100g. The classification reflects that it is naturally low in sodium. Nutritionally, it also delivers 18.4g protein per serving. Within this category, it falls between Halibut and Oysters for sodium, ranking 7 of 27.

Per 100g · Source: USDA FoodData Central

97kcalCalories
18.4gProtein
2gFat
0gCarbs
68mgSodium

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Shrimp

Allowed

At 571mg sodium per 100g, Shrimp falls into the Allowed category under Low-Sodium guidelines. It is naturally low in sodium. Beyond the primary classification, shrimp also provides 7.1g protein and 17.9g fat per 100g. It ranks among the highest in this category for sodium. The nearest lower option is Lobster at 535mg.

Per 100g · Source: USDA FoodData Central

VariantCaloriesProteinFatCarbsSodium
Raw100kcal20.4g1.4g0g870mg
Cooked87kcal17.5g1.3g0g97mg

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Sushi

Allowed

At 428mg sodium per 100g, Sushi falls into the Allowed category under Low-Sodium guidelines. This means it is naturally low in sodium. It ranks among the highest in this category for sodium. The nearest lower option is Canned Tuna in Oil at 416mg.

Per 100g · Source: USDA FoodData Central

94kcalCalories
2.9gProtein
0.7gFat
18.4gCarbs
428mgSodium

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Swordfish

Allowed

Swordfish is classified as Allowed on Low-Sodium, with 90mg sodium per 100g. The classification reflects that it is naturally low in sodium. Nutritionally, it also delivers 19.7g protein per serving. Within this category, it falls between Mahi Mahi and Canned Tuna for sodium, ranking 10 of 27.

Per 100g · Source: USDA FoodData Central

121kcalCalories
19.7gProtein
4gFat
0gCarbs
90mgSodium

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Tilapia

Allowed

Tilapia is classified as Allowed on Low-Sodium, with 52mg sodium per 100g. The classification reflects that it is naturally low in sodium. Nutritionally, it also delivers 20.1g protein per serving. Among the 27 items in this category, tilapia sits at the low end for sodium — next closest is Trout at 52mg.

Per 100g · Source: USDA FoodData Central

96kcalCalories
20.1gProtein
1.7gFat
0gCarbs
52mgSodium

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Trout

Allowed

Trout is classified as Allowed on Low-Sodium, with 52mg sodium per 100g. This means it is naturally low in sodium. It also contains 20.8g protein and 6.6g fat, which may factor into overall meal planning. Among the 27 items in this category, trout sits at the low end for sodium — next closest is Cod at 54mg.

Per 100g · Source: USDA FoodData Central

148kcalCalories
20.8gProtein
6.6gFat
0gCarbs
52mgSodium

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Tuna

Allowed

Tuna is classified as Allowed on Low-Sodium, with 372mg sodium per 100g. This means it is naturally low in sodium. It also contains 15.3g protein and 14.9g fat, which may factor into overall meal planning. Within this category, it falls between Mussels and Calamari for sodium, ranking 14 of 27.

Per 100g · Source: USDA FoodData Central

VariantCaloriesProteinFatCarbsSodium
Fresh (raw)144kcal23.3g4.9g0g39mg
Canned in Water90kcal19g0.9g0.1g219mg
Canned in Oil198kcal29.1g8.2g0g416mg

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Limited Seafood (5)

Canned Salmon

Limited

With 378mg sodium per 100g, Canned Salmon earns a Limited classification on Low-Sodium. This means it is sodium content that varies enormously by brand or preparation. It also contains 24.6g protein, which may factor into overall meal planning. Within this category, it falls between Canned Tuna in Water and Crab for sodium, ranking 17 of 27. Portion control is key here — a small amount may fit within the diet's parameters, while a full serving may not.

Per 100g · Source: USDA FoodData Central

136kcalCalories
24.6gProtein
4.2gFat
0gCarbs
378mgSodium

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Canned Tuna

Limited

With 219mg sodium per 100g, Canned Tuna earns a Limited classification on Low-Sodium. This means it is sodium content that varies enormously by brand or preparation. It also contains 19g protein, which may factor into overall meal planning. Within this category, it falls between Swordfish and Sardines for sodium, ranking 11 of 27. Check the label carefully: the same product can be compliant or not depending on the specific brand or how it was prepared.

Per 100g · Source: USDA FoodData Central

85kcalCalories
19gProtein
0.9gFat
0.1gCarbs
219mgSodium

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Canned Tuna in Oil

Limited

Canned Tuna in Oil is classified as Limited on Low-Sodium, with 416mg sodium per 100g. This means it is sodium content that varies enormously by brand or preparation. It also contains 29.1g protein and 8.2g fat, which may factor into overall meal planning. Within this category, it falls between Fish Sticks and Sushi for sodium, ranking 20 of 27. The "Limited" label means the classification depends on specific conditions — portion size, brand formulation, or preparation method can shift it from compliant to non-compliant.

Per 100g · Source: USDA FoodData Central

198kcalCalories
29.1gProtein
8.2gFat
0gCarbs
416mgSodium

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Canned Tuna in Water

Limited

At 377mg sodium per 100g, Canned Tuna in Water falls into the Limited category under Low-Sodium guidelines. The classification reflects that it is sodium content that varies enormously by brand or preparation. Nutritionally, it also delivers 23.6g protein per serving. Within this category, it falls between Calamari and Canned Salmon for sodium, ranking 16 of 27. The "Limited" label means the classification depends on specific conditions — portion size, brand formulation, or preparation method can shift it from compliant to non-compliant.

Per 100g · Source: USDA FoodData Central

128kcalCalories
23.6gProtein
3gFat
0gCarbs
377mgSodium

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Smoked Salmon

Limited

With 672mg sodium per 100g, Smoked Salmon earns a Limited classification on Low-Sodium. It is sodium content that varies enormously by brand or preparation. Beyond the primary classification, smoked salmon also provides 18.3g protein per 100g. It ranks among the highest in this category for sodium. The nearest lower option is Shrimp at 571mg. Portion control is key here — a small amount may fit within the diet's parameters, while a full serving may not.

Per 100g · Source: USDA FoodData Central

117kcalCalories
18.3gProtein
4.3gFat
0gCarbs
672mgSodium

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Not Allowed Seafood (1)

Fish Sticks

Not Allowed

At 402mg sodium per 100g, Fish Sticks falls into the Not Allowed category under Low-Sodium guidelines. It is high enough in sodium that a single serving uses a substantial fraction of a daily allowance. Beyond the primary classification, fish sticks also provides 11g protein and 16.2g fat per 100g. Within this category, it falls between Crab and Canned Tuna in Oil for sodium, ranking 19 of 27.

Per 100g · Source: USDA FoodData Central

277kcalCalories
11gProtein
16.2gFat
21.7gCarbs
402mgSodium

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