Ingredient guide · Ingredient reference

Is whiting nutritious? Protein, omega-3s and mercury guidance

Whiting provides protein and some EPA and DHA, and FDA places it among lower-mercury Best Choices. Nutrient amounts still depend on species mix, portion and whether the fish is plain, breaded or fried.

Read the evidence ↓

Supplement Science Insights Editorial Team

Published September 23, 2026

Use a defined cooked reference

The USDA SR Legacy mixed-species whiting entry, cooked with dry heat, lists 116 calories, 23.48 g protein and 1.69 g fat per 100 g edible portion. EPA is 0.283 g and DHA is 0.235 g, totaling 0.518 g, or 518 mg. These are 2018 reference values rather than an assay of every fillet. [1]

Low mercury is a category, not unlimited intake

FDA lists whiting as a Best Choice. Its advice for pregnancy and breastfeeding is two to three 4-ounce servings a week from this category, with a variety of fish. Children need the separate age-appropriate guidance. Locally caught fish can require local advisory checks. [2]

Preparation changes the meal

The dry-heat record does not describe a battered takeaway portion. Breading, oil, sauce and sides add their own nutrients, while serving weight changes the amount of fish eaten. Do not apply a plain-fish calorie figure to the entire prepared meal. [1][3]

Compare portions on the same basis

Imagine one package gives nutrition per 100 g and another per two fillets. First compare the actual weights and whether values refer to prepared food. Only then compare protein or fat; a larger labeled serving can otherwise look like a different-quality fish. [3][1]

Hypothetical example — compare the specified food and serving
ReferenceWhat it tells you
100 g cooked dry heatAbout 23.5 g protein; 518 mg EPA plus DHA
Best ChoiceFollow the relevant serving guidance
Breaded preparationUse its complete nutrition information
Is whiting nutritious? Protein, omega-3s and mercury guidance — 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. 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.
  3. 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.