Calories and Nutritions in Grouper

A 100g (3.5 oz) serving of raw grouper contains 92 calories. A 100g (3.5 oz) serving of cooked grouper (prepared with dry heat like baking or broiling) provides 118 calories.

One kilogram (1000g, 35.27 oz) of raw grouper contains 920 calories. One kilogram (1000g, 35.27 oz) of cooked grouper (dry heat) provides 1180 calories.

One ounce (28.35g, 1 oz) of raw grouper contains 26 calories. One ounce (28.35g, 1 oz) of cooked grouper (dry heat) provides 33 calories.

A common restaurant-sized raw grouper fillet of 6 oz (170g) contains 156 calories. Once cooked with dry heat, that 6 oz fillet provides 201 calories.

Grouper provides some health benefits like supporting heart health and boosting mineral intake due to its composition as a lean, nutrient-dense fish. The grouper fish benefits stem from its rich profile of protein, vitamins, and minerals. A list of the health benefits of grouper are shown below.

• Source of Lean Protein: Grouper is packed with high-quality protein, which is essential for building and repairing tissues, maintaining muscle mass, and supporting immune function, all with a very low fat content. (Paddon-Jones, D. & Rasmussen, B.B., 2009, "Dietary protein recommendations and the prevention of sarcopenia").
• Rich in Selenium: It is an outstanding source of selenium, a crucial trace mineral that acts as a powerful antioxidant, protecting cells from damage, supporting thyroid function, and playing a key role in the immune system. (Rayman, M.P., 2012, "Selenium and human health").
• Good Source of B Vitamins: Grouper provides several important B vitamins, including Vitamin B12 and Vitamin B6. These vitamins are vital for nerve function, red blood cell formation, and converting food into energy.
• Contains Omega-3 Fatty Acids: Grouper is a source of the beneficial omega-3 fatty acids EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). These fats are known to support cardiovascular health by reducing inflammation and triglycerides. (Mozaffarian, D. & Rimm, E.B., 2006, "Fish intake, contaminants, and human health: evaluating the risks and the benefits").
• Provides Vitamin D: Grouper is a good source of Vitamin D, a nutrient that is essential for calcium absorption, bone health, and proper immune function.
• Good Source of Potassium and Phosphorus: It contains a good amount of potassium, which is important for regulating blood pressure and fluid balance, and phosphorus, a key mineral for bone and tooth health.
• Low in Calories: Grouper is a low-calorie food, making it an excellent choice for a nutrient-dense protein source within a calorie-controlled or weight management diet.
• May Support Brain Health: The omega-3 fatty acids, particularly DHA, found in grouper are important for brain development and cognitive function. (Swanson, D., et al., 2012, "Omega-3 Fatty Acids EPA and DHA: Health Benefits Throughout Life").

Grouper has been known to cause some unwanted effects like a high risk of mercury contamination and potential for ciguatera poisoning due to its status as a large, predatory reef fish. A list of the downsides of grouper are shown below.

• High Mercury Content: Grouper is a large, long-lived predatory fish, which means it can accumulate high levels of mercury in its tissues. The U.S. Food and Drug Administration (FDA) and the Environmental Protection Agency (EPA) often place grouper in the category of fish that should be eaten infrequently, especially by vulnerable populations like pregnant women, nursing mothers, and young children, to avoid the neurotoxic effects of mercury. (U.S. Food and Drug Administration, "Advice About Eating Fish").
• Risk of Ciguatera Fish Poisoning: As a large reef fish, grouper is one of the species most commonly associated with Ciguatera Fish Poisoning (CFP). This illness is caused by consuming fish that have accumulated ciguatoxins from feeding on smaller fish that eat certain toxic algae found in tropical and subtropical waters (e.g., the Caribbean, Gulf of Mexico, Pacific islands). CFP can cause severe gastrointestinal, neurological, and cardiovascular symptoms. (Friedman, M.A., et al., 2017, "Ciguatera fish poisoning: treatment, prevention and management").
• Sustainability Concerns: Many species of grouper are overfished, and some are considered endangered or vulnerable. Destructive fishing methods are sometimes used to catch them, causing damage to coral reef habitats. Choosing grouper from sustainable sources is crucial. (Monterey Bay Aquarium Seafood Watch, "Grouper").
• Mislabeling (Seafood Fraud): Grouper is a fish that is sometimes subject to mislabeling, where a less expensive or different species of fish is sold as grouper. This can have both economic and health implications (e.g., if a higher-mercury fish is substituted).

No, grouper is generally not considered a good or safe choice for regular consumption, despite its nutritional benefits, primarily due to its high potential for mercury contamination and the risk of ciguatera fish poisoning. While grouper is a good source of lean protein, vitamins, and minerals, the health risks associated with it often outweigh these benefits, especially for sensitive populations. The U.S. FDA's "Advice About Eating Fish" places grouper on the list of choices to eat only once a week for most adults, and it is on the "Choices to Avoid" list for pregnant women and children. This guidance is based on its average mercury levels, which can be high. (U.S. Food and Drug Administration, "Advice About Eating Fish"). Given these significant risks, choosing other, lower-mercury fish is a safer way to get the health benefits of seafood. (Mozaffarian, D. & Rimm, E.B., 2006, "Fish intake, contaminants, and human health: evaluating the risks and the benefits").

A person should limit their consumption of grouper to no more than one serving per week. This recommendation is based on the guidance from the U.S. Food and Drug Administration (FDA) regarding mercury levels in fish. The common consumption rate for grouper, for those who choose to eat it, should be infrequent. While a person eats grouper, they can gain benefits such as high-quality protein, selenium, and B vitamins. However, because grouper is a large predatory fish, it accumulates mercury, and limiting intake is a key strategy to minimize potential health risks associated with mercury exposure. Vulnerable groups, including pregnant women, those planning to become pregnant, breastfeeding mothers, and young children, are often advised to avoid grouper altogether in favor of fish with lower mercury content.

Yes, grouper can help to meet daily macronutrient goals, specifically for protein, as it is a very rich source of high-quality, lean protein with virtually no carbohydrates. A 100g cooked serving of grouper provides about 25g of protein, which is about 50% of the Daily Value for a person on a 2,000-calorie diet. Protein is essential for muscle repair, immune function, and satiety. (Paddon-Jones, D. & Rasmussen, B.B., 2009, "Dietary protein recommendations and the prevention of sarcopenia"). The fat content of grouper is very low (around 1.3g per 100g cooked), making it a lean choice for those looking to increase protein intake without adding significant fat. (USDA FoodData Central, "Fish, grouper, mixed species, cooked, dry heat"). While it is effective for meeting protein goals, its use should be limited due to the high mercury risk.

The calorie content of grouper shows very little change among the different common types like Red, Black, and Gag Grouper, as long as they are prepared using similar low-fat cooking methods like baking or broiling. These species are all lean, white-fleshed fish with a very similar macronutrient composition. A 100g cooked portion of any of these common grouper varieties will typically contain between 118 and 125 calories. This consistency is due to their shared characteristics of being high in protein and very low in fat. Therefore, the choice between Red Grouper or Black Grouper, for example, would be based on subtle differences in taste or texture rather than a significant difference in caloric value. The cooking method will have a much greater impact on the final calorie count of a grouper dish; for instance, frying grouper will add substantial calories from fat compared to grilling or steaming.

The use of grouper or any savory fish in desserts would be considered unconventional in any culinary practice. Grouper has a savory flavor profile that is entirely unsuited for sweet dessert applications. 

Classic sauces that go well with fried grouper include Tartar Sauce, Cocktail Sauce, a simple Lemon-Butter Sauce, and various types of aioli. Tartar sauce is a traditional choice. Its creamy, tangy profile with the brininess of pickles or capers cuts through the richness of the fried fish. Cocktail sauce offers a zesty, sweet, and tangy contrast with a kick from horseradish that complements the mild grouper. A lemon-butter sauce is simple and elegant. It allows the sweet flavor of the grouper to shine through while the acidity of the lemon balances the fat from frying. Aiolis, which are garlic-infused mayonnaises, can be customized in many ways. Chipotle for a smoky heat or fresh herbs like dill or basil can add a creamy and flavorful dimension. Sauces such as these are all excellent choices to enhance the flavor of fried grouper.

The origin of grouper as a food source is tied to coastal communities in tropical and subtropical waters around the globe, where the hundreds of species in the grouper family are found. These fish have been a vital part of the diet in regions like the Caribbean, the Gulf of Mexico, Southeast Asia, and the coastal areas of Africa and Australia for centuries. They were traditionally caught by local fishermen and were prized for their large size, which could feed many people, and their firm, high-quality white meat.

In the United States, grouper's culinary history is most deeply rooted in Florida and the Gulf Coast. It became a particularly iconic food in this region, synonymous with fresh, local seafood. A dish that perfectly highlights this connection is the "Fried Grouper Sandwich." This simple yet beloved dish, which gained immense popularity in Florida in the mid- to late-20th century, typically features a fresh fillet of grouper that is breaded and deep-fried, then served on a soft bun with lettuce, tomato, and tartar sauce. The sandwich showcases the grouper's ability to remain moist and flaky even after frying, and its mild sweetness provides a perfect base for the creamy, tangy sauce and fresh toppings. The Fried Grouper Sandwich is more than just a meal. It is a cultural icon of the Florida dining scene and represents the transformation of a local catch into a widely celebrated regional specialty.