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    Ingredient guide · Ingredient reference

    Is snapper nutritious? Protein, omega-3 fats and mercury advice

    Cooked snapper can provide a protein-rich meal with a relatively small amount of fat. The USDA mixed-species entry is a useful reference, while the actual species, preparation and FDA mercury advice remain relevant.

    Read the evidence ↓

    Supplement Science Insights Editorial Team

    Published September 23, 2026

    Protein and fat in a defined cooked portion

    USDA SR Legacy lists 128 calories, 26.3 g protein and 1.72 g fat per 100 g of mixed-species snapper cooked with dry heat. The entry contains 0.048 g EPA and 0.273 g DHA: 0.321 g, or 321 mg, combined. It is a 2018 reference entry for mixed species, not a guarantee for every snapper product. [1]

    Omega-3 content is one part of the meal

    Snapper contains EPA and DHA, but the word fish does not imply a uniform omega-3 amount across species. Compare the same cooked weight and preparation. These nutrient figures describe the food and should not be used to promise a medical effect. [1][2]

    Mercury guidance still applies

    FDA lists snapper as a Good Choice. Its pregnancy and breastfeeding advice allows one 4-ounce serving a week from this category. That category is distinct from Best Choices, for which the chart permits more weekly servings. Consult local advisories for self-caught fish. [3]

    Build the comparison around the whole serving

    Imagine choosing between plain baked snapper and a breaded snapper sandwich. The plain dry-heat record helps describe the fish, but it does not include breading, frying oil, bread or sauce. Compare the full meal portion rather than assigning the plain fish’s calories to the sandwich. [1][4]

    Hypothetical example — compare a meal portion without confusing it with a treatment dose
    CheckInterpretation
    100 g cooked reference26.3 g protein; 321 mg EPA plus DHA
    Mixed-species entryActual products can differ
    Breaded sandwichCount the complete preparation
    Is snapper nutritious? Protein, omega-3 fats and mercury advice — original article outline diagram
    Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

    Sources for this article

    1. USDA FoodData Central — SR Legacy April 2018 food composition dataset
      Source consulted: 2026-09-20. This is a reference resource, not a claim that we conducted the studies or tested a product.
    2. Omega-3 Fatty Acids - Health Professional Fact Sheet
      Source consulted: 2026-09-20. This is a reference resource, not a claim that we conducted the studies or tested a product.
    3. Advice about Eating Fish | FDA
      Source consulted: 2026-09-20. This is a reference resource, not a claim that we conducted the studies or tested a product.
    4. How to Understand and Use the Nutrition Facts Label | FDA
      Source consulted: 2026-09-20. This is a reference resource, not a claim that we conducted the studies or tested a product.