Calories in White Fish: Nutritional facts for White Fish Types

A 100g (3.53oz) cooked white fish fillet, using Atlantic cod contains 82 calories. A 100g (3.53oz) serving of raw white fish, such as Atlantic cod, contains 82 calories.

One kilogram (2.2lbs) of cooked white fish fillet, using Atlantic cod contains 820 calories. One kilogram of raw white fish, such as Atlantic cod, contains 820 calories.

One cooked fillet of white fish (Atlantic cod) weighing 180g (6.3oz) contains 148 calories. One raw fillet of white fish (Atlantic cod) weighing 180g (6.3oz) contains 148 calories.

One ounce (28.35g) of a cooked white fish fillet, using Atlantic cod contains 23 calories. One ounce of raw white fish, such as Atlantic cod, contains 23 calories.

Consumption of white fish is linked to several positive health outcomes, which are detailed below:

• Supports Lean Muscle Mass and Weight Management: White fish is an excellent source of high-quality, low-fat protein. Protein is essential for building and repairing tissues and can increase satiety, which helps in controlling overall calorie intake and managing body weight (Westerterp-Plantenga, M. S., 2003, The role of protein in weight management).
• Promotes Heart Health: Many types of white fish, while lean, contain omega-3 fatty acids. These fatty acids help lower blood pressure, reduce triglycerides, and decrease the risk of cardiovascular events. Regular fish consumption is a cornerstone of heart-healthy diets (Mozaffarian, D., & Rimm, E. B., 2006, Fish intake, contaminants, and human health: evaluating the risks and the benefits).
• Boosts Brain Function: White fish is a good source of vitamin B12 and other B vitamins, which are crucial for nerve function and the production of red blood cells. The omega-3s present also play a role in maintaining cognitive health and may reduce the risk of age-related cognitive decline (Morris, M. C., et al., 2003, Consumption of fish and n-3 fatty acids and risk of incident Alzheimer disease).
• Supports Thyroid Function: White fish provides iodine and selenium, two minerals that are vital for the proper functioning of the thyroid gland. The thyroid regulates metabolism, and these nutrients are necessary for the synthesis of thyroid hormones (Zimmermann, M. B., & Köhrle, J., 2002, The impact of iron and selenium deficiencies on iodine and thyroid metabolism: biochemistry and relevance to public health).

Although white fish is a healthy food, there are some potential downsides which are outlined below:

• Mercury Content: Some species of white fish can contain mercury, an environmental contaminant. While levels are lower than in larger predatory fish, accumulation can be a concern, especially for pregnant women and young children. An alternative with lower mercury is shrimp or scallops. The FDA suggests a weekly consumption of two to three servings of fish from the "Best Choices" list, which includes cod and tilapia (U.S. Food & Drug Administration, 2021, Advice about Eating Fish).
• Sustainability and Overfishing: Certain popular white fish species, such as Atlantic cod, have faced severe population declines due to overfishing. Choosing sustainably sourced fish is important for ocean health. An alternative is to select fish certified by organizations like the Marine Stewardship Council (MSC). Look for pollock from Alaska or farmed tilapia from responsible sources (Pauly, D., et al., 2002, Towards sustainability in world fisheries).
• Microplastics Contamination: Microplastics have been found in marine environments and can be ingested by fish. The long-term health effects of consuming microplastics through seafood are still under investigation, but represent a potential concern. Filtering water sources and reducing plastic use are broader solutions. There is no direct dietary alternative to avoid this potential exposure from wild seafood (Smith, M., et al., 2018, Microplastics in Seafood and the Implications for Human Health).

Yes, white fish is good for consumption because the food provides lean protein, vitamins, and minerals that support multiple aspects of health. For heart health, white fish is low in saturated fat and contains omega-3 fatty acids that help manage cholesterol levels and reduce blood pressure. For brain health, the B vitamins, particularly B12, and omega-3s found in white fish are essential for nerve function and cognitive maintenance. The high-quality protein in white fish is important for muscle development and repair, and because protein promotes satiety, white fish can be a valuable component of a weight management plan. 

Regular fish intake is associated with a reduced risk of coronary disease mortality (Marckmann, P., & Grønbaek, M., 1999, Fish consumption and coronary heart disease mortality. A systematic review of prospective cohort studies). The consumption of fish is also linked to a slower rate of age-related cognitive decline in older adults (Morris, M. C., et al., 2005, Fish consumption and cognitive decline with age in a large community study). Furthermore, the selenium in white fish is a critical component of enzymes that protect the thyroid gland from oxidative damage (Schomburg, L., 2011, Selenium, selenoproteins and the thyroid gland: interactions in health and disease).

The calorie content of white fish changes based on the species, with the main difference being the fat content of the fish. Leaner fish like Atlantic Cod contain the fewest calories, with 82 calories per 100g cooked serving. Flounder and haddock have slightly more, with 91 and 90 calories, respectively. Alaskan Pollock is also a low-calorie choice at 92 calories per 100g. The calorie count increases in fish with a higher fat content. Halibut contains 111 calories per 100g serving. The highest calorie white fish among these common types is Tilapia, which provides 128 calories per 100g cooked serving.

White fish is not a conventional ingredient for desserts, and its use is limited.

Cooking white fish at high temperatures causes changes to the white fish macros through moisture loss and protein denaturation. The high heat forces water out of the fish muscle, which concentrates the protein and fat content relative to the final weight of the cooked product, meaning a 100g portion of cooked white fish will have a higher protein and fat concentration than a 100g portion of raw white fish. Cooking at high temperatures does not reduce the total macronutrient content in white fish in terms of grams of protein or fat, but instead alters the structure and can affect the quality of these macros. The intense heat denatures the proteins, causing them to coagulate and become firmer, which can make them slightly less digestible, and the small amount of fat in lean white fish can undergo oxidation, which may reduce its nutritional quality. 

Research shows that while the overall quantity of macronutrients remains stable, the physical and chemical properties change; for example, frying at high temperatures leads to the most significant moisture loss and changes in protein structure (García-Arias, M.T., et al., 2003, Cooking-freezing-reheating (CFR) of sardine (Sardina pilchardus) fillets. Effect of different cooking and reheating methods on the proximate and fatty acid compositions). Another study confirms that severe heat treatment can lead to a decrease in the availability of some amino acids, the building blocks of protein (Bax, M.L., et al., 2012, The effects of high temperature/short time processing on the structure and digestibility of proteins).

The origin of white fish as a dietary staple dates back thousands of years to coastal and river-based civilizations across the globe. In Northern Europe, species like cod and haddock were fundamental to the survival of Norse and early British populations. The Vikings perfected methods of air-drying cod, creating a durable, protein-rich food source called stockfish that fueled long sea voyages. This preservation technique allowed cod to become one of the world's first international commodities. The salt cod trade, pioneered by the Basque and Portuguese, became a cornerstone of European economies from the 15th century onward, linking the Grand Banks of Newfoundland to markets across the continent. This trade gave rise to iconic national dishes like Portuguese Bacalhau à Brás and Italian Baccalà Mantecato. In England, the rise of industrial-era trawl fishing in the 19th century made white fish cheap and abundant, leading to the creation of the classic dish Fish and Chips, which became a cultural institution. In the Americas, Indigenous peoples harvested freshwater white fish like tilapia and various coastal species. In Japan, white fish has long been used for grilling (shioyaki), simmering (nimono), and as a key ingredient in processed products like surimi, the basis for kamaboko fish cakes.