A typical 3.5-ounce (100-gram) serving of salmon contains between 1,000 and 1,800 milligrams of EPA and DHA, the two omega-3 fatty acids that matter most for health. The exact amount depends on the species, whether the fish is farmed or wild, and how you cook it.
Omega-3 Content by Salmon Species
Not all salmon is created equal. King (Chinook) and farmed Atlantic salmon sit at the top, while pink salmon delivers the least. Here’s the breakdown per 100 grams of edible fish, based on data from Oregon State University:
- Atlantic salmon (farmed): 1,800 mg total (600 mg EPA + 1,200 mg DHA)
- King (Chinook) salmon: 1,400 mg total (800 mg EPA + 600 mg DHA)
- Sockeye salmon: 1,200 mg total (500 mg EPA + 700 mg DHA)
- Coho salmon (farmed): 1,200 mg total (400 mg EPA + 800 mg DHA)
- Pink salmon: 1,000 mg total (400 mg EPA + 600 mg DHA)
Even the lowest-ranking pink salmon still delivers a full gram of omega-3s in a single serving, which puts salmon well ahead of most other protein sources.
Farmed vs. Wild Salmon
Farmed salmon generally contains more omega-3s than wild-caught. A study measuring fatty acids across 76 fish species found that omega-3 content in salmon ranged from 717 mg to 1,533 mg per 100-gram serving, with farmed varieties clustering at the higher end. The reason is straightforward: farmed salmon eat a fattier diet and get less exercise, so they accumulate more fat overall, including omega-3s.
The tradeoff is that farmed salmon also carries higher levels of saturated fat. A 100-gram serving of farmed Atlantic salmon has roughly twice the total fat of wild sockeye. If you’re eating salmon primarily for omega-3s, farmed gives you more per bite. If you’re watching total fat intake, wild-caught is leaner while still delivering a solid dose.
Canned Salmon Holds Up Well
Canned salmon is one of the most cost-effective ways to get omega-3s, and the numbers are comparable to fresh. According to the National Lipid Association, a 3-ounce serving of canned salmon provides 1,000 to 1,500 mg of EPA and DHA, placing it in the same range as fresh farmed or wild King salmon. Wild sockeye, coho, chum, and pink salmon (whether canned or fresh) fall into the 500 to 1,000 mg range per 3-ounce serving.
Canned salmon with bones has the added benefit of calcium, since those soft bones are fully edible. The canning process doesn’t meaningfully degrade omega-3 content.
Cooking Methods and Omega-3 Retention
Baking salmon to the recommended 145°F preserves its omega-3 content, according to USDA research. The key is avoiding overcooking. When salmon is baked to a tender, safe internal temperature rather than dried out at high heat, the beneficial fats stay intact.
Frying is the method most likely to reduce omega-3 levels, particularly deep-frying, because the fish absorbs cooking oil that dilutes the ratio of omega-3 to other fats. Baking, broiling, poaching, and steaming are your best options if maximizing omega-3 intake is the goal. Grilling works too, though some fat will drip through the grates.
How Salmon Compares to Supplements
Research published in the British Journal of Nutrition compared people eating salmon to people taking salmon oil capsules providing the same amount of omega-3s. Both groups saw similar increases in omega-3 levels in their red blood cells. Earlier studies had suggested that omega-3s from whole fish might absorb better than capsules, but more recent evidence shows they’re roughly equivalent when the dose is matched.
That said, a single salmon fillet delivers what you’d get from several standard fish oil capsules (most contain 300 to 500 mg of EPA and DHA per pill), along with protein, selenium, B vitamins, and vitamin D that capsules don’t provide.
How Much Omega-3 You Actually Need
There’s no single official number for daily omega-3 intake. The American Heart Association recommends eating fatty fish like salmon at least twice per week for general heart health, which works out to roughly two 3.5-ounce servings. For people with existing heart disease, the AHA suggests about 1,000 mg per day of EPA plus DHA. A single serving of most salmon species covers that in one meal.
For context, the FDA caps supplement labels at 2,000 mg of EPA and DHA per day. Prescription omega-3s for managing very high triglycerides go up to 4,000 mg per day, but that’s a clinical dose, not a dietary target. For most people, two servings of salmon per week easily meets general wellness goals without supplements.
Salmon Is Exceptionally Low in Mercury
One reason salmon stands out among fatty fish is its low mercury levels. Fresh or frozen salmon averages just 0.022 parts per million of mercury, and canned salmon is even lower at 0.014 ppm, according to FDA data. For comparison, swordfish averages 0.995 ppm and bigeye tuna 0.689 ppm. This makes salmon one of the safest fish to eat frequently, which matters when the whole point is regular consumption for omega-3 benefits.