Fish and seafood high in potassium (per serving)
14 fish and seafood ranked by potassium per common serving, from USDA FoodData Central. Mollusks, clam leads with 534 mg per 3 oz (11% of the Daily Value), followed by Fish, salmon (534 mg) and Fish, mackerel (474 mg).
Top 10 at a glance
Top 10 fish and seafood highest in potassium
- Mollusks, clam (mixed species, canned, drained solids)3 oz (85 g) · 121 kcal534 mg11% DV
- Fish, salmon (Atlantic, wild, cooked, dry heat)3 oz (85 g) · 155 kcal534 mg11% DV
- Fish, mackerel (king, cooked, dry heat)3 oz (85 g) · 114 kcal474 mg10% DV
- Fish, mahimahi (cooked, dry heat)3 oz (85 g) · 93 kcal453 mg9.6% DV
- Fish, cod (Atlantic, canned, solids and liquid)3 oz (85 g) · 89 kcal449 mg9.5% DV
- Fish, halibut (Atlantic and Pacific, cooked, dry heat)3 oz (85 g) · 94 kcal449 mg9.5% DV
- Fish, tuna (yellowfin, fresh, cooked, dry heat)3 oz (85 g) · 110 kcal448 mg9.5% DV
- Crustaceans, crab (dungeness, cooked, moist heat)3 oz (85 g) · 94 kcal347 mg7.4% DV
- Salmon, sockeye (canned, total can contents)3 oz (85 g) · 130 kcal280 mg5.9% DV
- Mollusks, scallop ((bay and sea), cooked, steamed)3 oz (85 g) · 94 kcal267 mg5.7% DV
All 14 fish and seafood ranked
Sort any column. Serving sizes are USDA household measures (a cup, a medium fruit, 3 oz of cooked meat or fish, 1 oz of nuts or cheese). %DV is based on the FDA Daily Value of 4,700 mg.
| # | Food | Serving | Potassium (mg) | % Daily Value | Per 100 g | kcal |
|---|---|---|---|---|---|---|
| 1 | Mollusks, clam (mixed species, canned, drained solids) | 3 oz (85 g) | 534 | 628 | 121 | |
| 2 | Fish, salmon (Atlantic, wild, cooked, dry heat) | 3 oz (85 g) | 534 | 628 | 155 | |
| 3 | Fish, mackerel (king, cooked, dry heat) | 3 oz (85 g) | 474 | 558 | 114 | |
| 4 | Fish, mahimahi (cooked, dry heat) | 3 oz (85 g) | 453 | 533 | 93 | |
| 5 | Fish, cod (Atlantic, canned, solids and liquid) | 3 oz (85 g) | 449 | 528 | 89 | |
| 6 | Fish, halibut (Atlantic and Pacific, cooked, dry heat) | 3 oz (85 g) | 449 | 528 | 94 | |
| 7 | Fish, tuna (yellowfin, fresh, cooked, dry heat) | 3 oz (85 g) | 448 | 527 | 110 | |
| 8 | Crustaceans, crab (dungeness, cooked, moist heat) | 3 oz (85 g) | 347 | 408 | 94 | |
| 9 | Salmon, sockeye (canned, total can contents) | 3 oz (85 g) | 280 | 329 | 130 | |
| 10 | Mollusks, scallop ((bay and sea), cooked, steamed) | 3 oz (85 g) | 267 | 314 | 94 | |
| 11 | Mollusks, oyster (Pacific, cooked, moist heat) | 3 oz (85 g) | 257 | 302 | 139 | |
| 12 | Mollusks, mussel (blue, cooked, moist heat) | 3 oz (85 g) | 228 | 268 | 146 | |
| 13 | Crustaceans, shrimp (cooked) | 3 oz (85 g) | 220 | 259 | 84 | |
| 14 | Crustaceans, lobster (northern, cooked, moist heat) | 3 oz (85 g) | 196 | 230 | 76 |
Potassium in specific foods
How this list is built. Values are from USDA FoodData Central (SR Legacy, with Foundation Foods analytical updates where available). The pool is 1,677 whole foods: fruits, vegetables, legumes, nuts and seeds, grains, fish, meat, poultry, dairy and eggs. Spices, herbs, baby foods, powders, flours, dried and freeze-dried items, juices, processed meats, organ meats other than liver and uncommon foods are excluded; meats, fish, grains and legumes are ranked cooked. Each food family appears once and no single animal or plant fills more than six places. Ranking is by amount per serving; the per-100 g column is shown for reference. A food that USDA has not analysed for potassium is left out rather than counted as zero. Full methodology.
Frequently asked questions
Which food is highest in potassium?
Among fish and seafood in the USDA database, Mollusks, clam (mixed species, canned, drained solids) has the most potassium per serving: 534 mg per 3 oz (11% of the Daily Value). Per 100 g it contains 628 mg.
How much potassium do I need per day?
The FDA Daily Value used on Nutrition Facts labels is 4,700 mg of potassium for adults and children aged 4 and over. Individual needs vary with age, sex, pregnancy and health conditions.
What counts as a food high in potassium?
FDA labeling rules call a food a 'good source' when one serving provides 10 to 19% of the Daily Value and 'high' or 'excellent' at 20% or more. 0 of the 14 foods on this list reach 20% DV per serving.
Related rankings
- Foods high in magnesium
- Foods high in iron
- Foods high in calcium
- Foods high in zinc
- Foods high in selenium
- Foods high in copper
- All foods high in potassium
- Fruits high in potassium
- Vegetables high in potassium
- Legumes high in potassium
- Nuts and seeds high in potassium
- Grains high in potassium
- Meat and poultry high in potassium
- Dairy and eggs high in potassium
Nutrient values are from USDA FoodData Central (SR Legacy, April 2018; Foundation Foods, April 2026) and shown per serving as described on each page. %DV uses the FDA Daily Values for adults and children aged 4 and over. This is nutrition data for general information, not medical or dietary advice; talk to a clinician or registered dietitian about your own needs. How the numbers are calculated.