Catfish is one of the most affordable and accessible protein sources in North America, particularly popular in Southern cuisine and across the United States aquaculture industry. Whether you’re meal-prepping for muscle gain, managing your weight, or simply looking for a versatile dinner protein, catfish delivers solid nutrition at a budget-friendly price. It’s leaner than beef, rich in omega-3 fatty acids, and widely available both fresh and frozen at most grocery stores.

But exactly how many calories are in catfish, and what does the full nutrition profile look like? This guide breaks down the exact calorie counts, macro and micronutrients, preparation effects, and practical eating strategies to help you use catfish effectively in your diet.

Calories in Catfish (Quick Answer)

A 3.5-ounce (100g) serving of cooked catfish contains approximately 95–105 calories, depending on cooking method and whether the skin is removed.

• 3 oz (85g) baked catfish fillet: 81 calories
• 3.5 oz (100g) fried catfish: 180–200 calories
• 3.5 oz (100g) raw catfish fillet: 88 calories

Calorie counts vary based on whether the fish is fried in oil, baked, steamed, or pan-seared, as well as the species (channel catfish vs. blue catfish) and fat content of individual fish.

Full Nutrition Facts for 3.5 oz (100g) of Baked Catfish

Here’s the complete nutrition breakdown for a standard cooked serving of catfish fillet (baked without added fat):

Nutrient	Amount	% Daily Value
Calories	103 kcal	5%
Total Fat	4.9g	6%
Saturated Fat	1.1g	6%
Cholesterol	58mg	19%
Sodium	61mg	3%
Total Carbohydrate	0g	0%
Dietary Fiber	0g	0%
Total Sugars	0g	0%
Protein	17.6g	35%
Vitamin D	570 IU	14%
Selenium	27.8 mcg	51%
Phosphorus	186mg	15%

*Percent Daily Values are based on a 2,000-calorie diet. Source: USDA FoodData Central.

Key insight: Catfish is a genuine lean protein with nearly 18g per 100-calorie serving, making it highly efficient for muscle building. Its selenium content is exceptional—hitting over 50% of the daily value in a single serving—which supports thyroid function and antioxidant defense. Despite being farmed fish, catfish maintains a favorable omega-3 to omega-6 ratio and stays low in sodium and saturated fat when prepared without heavy frying.

Raw vs. Baked Catfish: How Cooking Changes Calories and Nutrition

Raw Catfish Fillet

• 88 calories per 100g—slightly lower than cooked due to water loss during cooking
• Contains natural enzymes and active nutrients that may be partially broken down by heat
• Higher perceived moisture; less concentrated protein by weight

Baked Catfish Fillet

• 103 calories per 100g due to water evaporation concentrating nutrients and calories
• Protein becomes denser and more bioavailable for muscle synthesis
• Saturated fat remains low; no added oil means no extra calories from cooking fat

Takeaway: Baking catfish (without added butter or oil) concentrates the protein and nutrients without adding excess calories. If you’re frying catfish, you’re adding 80–120 extra calories per serving from cooking oil. For weight loss and muscle-building goals, baking, steaming, or grilling are your best preparation methods. If you must fry, use a minimal amount of oil or opt for air-frying to keep calories under control.

Is Catfish Good for Weight Loss?

Yes, catfish is a solid choice for weight loss when prepared properly. At under 105 calories per 3.5-ounce serving with 17–18g of protein, it delivers strong satiety without excessive calories. The high protein content promotes muscle retention during calorie deficits and increases the thermic effect of food, meaning your body burns extra calories digesting it. Catfish is also free of carbohydrates, making it compatible with low-carb and keto diets. The key is avoiding fried preparations, which can triple the calorie count.

Tips to Eat Catfish Without Gaining Weight:

• Bake, steam, or grill catfish instead of frying—this keeps calories minimal and prevents oil absorption
• Pair with vegetables and whole grains to build a balanced plate; a 100-calorie catfish fillet leaves room for 300+ calories of healthy sides
• Watch portion sizes at restaurants—fried catfish can reach 400+ calories; ask for grilled or baked options
• Check seasoning sodium—while raw catfish is low in sodium, breaded or blackened versions may contain 300+ mg; use fresh herbs instead

When meal-prepping, baked catfish stays fresh for 3–4 days in the refrigerator and reheats well. Portion out 100–150g per meal to keep calories predictable and easy to track.

How Portion Size Affects Calories

Catfish calories scale proportionally with weight, making portions easy to calculate. A 100g fillet contains roughly 100 calories; a 150g fillet contains roughly 150 calories. Most restaurant servings of catfish range from 150–200g (150–200 calories for baked, 250–400 calories if fried). Home portions are usually easier to control because you can weigh the fillet before cooking.

Example:

• Small portion (100g baked): 103 calories, 17.6g protein—ideal for a light lunch or part of a larger meal
• Large portion (200g baked): 206 calories, 35g protein—a filling dinner that fits comfortably in a 2,000-calorie diet

Using a kitchen scale is the most accurate way to manage catfish portions and track calories precisely.

Best Way to Measure Catfish Accurately

Measuring catfish by weight is far more accurate than visual estimation, especially since fillets vary in thickness and density. A kitchen scale gives you exact calories and macros, eliminating guesswork. If you don’t have a scale, measuring by ounces or standard serving comparisons works, but weight is always most reliable for nutrition tracking.

Options:

• Digital kitchen scale: Weigh the raw fillet before cooking; cooked weight differs but the nutrition data remains consistent
• Ounce-based portions: 3.5 oz (100g) is a standard serving; most kitchen scales show both grams and ounces
• USDA serving reference: One medium catfish fillet is approximately 85–100g; use this as your baseline and adjust for larger or smaller pieces

Calculate Your Exact Calorie Intake

Knowing the calories in a single catfish fillet is helpful, but understanding your total daily intake—including side dishes, cooking oils, and other proteins—is what drives real results. If you’re tracking macros for muscle gain, weight loss, or performance, precision matters.

Our site offers a free AI-powered nutrients calculator that breaks down your exact calorie, protein, fat, and carb intake based on everything you eat. Simply enter your catfish portion size, cooking method, and sides, and get an instant nutrition snapshot. Use the calculator here.

• Get exact macro breakdowns for any meal combination in seconds
• Track portion sizes and cooking methods to see how preparation affects your total intake
• Plan weekly meals with confidence, knowing your exact nutritional targets

Common Mistakes When Eating Catfish

Even a nutritious food like catfish can work against your goals if prepared or portioned incorrectly. Here are the most common pitfalls:

❌ Frying catfish in excessive oil without checking calories—fried catfish can reach 200–400 calories per serving versus 100 for baked.

❌ Eating restaurant catfish without asking how it’s prepared—”crispy” or “golden” almost always means deep-fried.

❌ Pairing catfish exclusively with high-calorie sides like hushpuppies, fries, or cream-based sauces, turning a 100-calorie protein into a 600+ calorie meal.

❌ Overlooking portion control at fish fries or buffets, where catfish is often unlimited—one 200g plate of fried catfish can exceed 400 calories before sides.

Mindful preparation and honest portion assessment will keep catfish working for you instead of against your nutrition goals.

FAQ

How many calories are in 100g of catfish?

A 100g serving of baked catfish contains approximately 103 calories. Raw catfish is slightly lower at 88 calories per 100g, while fried catfish jumps to 180–200 calories due to oil absorption.

Is catfish fattening?

No, catfish is not inherently fattening. It’s low in calories (under 105 per 100g when baked), high in protein, and low in carbohydrates. It only becomes calorie-dense when deep-fried or paired with high-calorie sauces and sides. Baked, grilled, or steamed catfish is an excellent lean protein for weight loss.

Does farmed catfish have less mercury than wild catfish?

Farmed catfish generally has lower mercury levels than wild-caught varieties because farmed catfish are fed controlled diets and live in regulated environments. Channel catfish (the most common farmed variety) is considered a low-mercury fish and is safe to eat 2–3 times per week for most adults.

How does catfish compare to chicken breast in calories and protein?

Catfish (103 calories, 17.6g protein per 100g) is actually slightly leaner than chicken breast (165 calories, 31g protein per 100g raw). Baked catfish delivers excellent protein efficiency with fewer calories, though chicken breast offers more total protein per serving. Both are lean proteins; the choice comes down to taste preference and variety.

Conclusion

Catfish is a lean, affordable protein that delivers significant nutrition in a small calorie package. With just 103 calories and nearly 18g of protein per 100g serving, it’s an efficient choice for weight loss, muscle building, and general health. Its selenium content, low sodium, and favorable fat profile make it a smarter option than many other protein sources—provided it’s prepared without excessive frying or heavy sauces. The flexibility of catfish also works in your favor: it takes on flavors easily, stays fresh for multiple meals, and works equally well in casual weeknight dinners or macro-tracked meal prep.

The best approach is to keep preparation simple—bake, grill, or steam your catfish, pair it with vegetables and whole grains, and use a kitchen scale to track portions precisely. If you’re serious about your nutrition results, don’t rely on estimates. **Use a reliable nutrients calculator to log your exact intake and adjust your diet with confidence.** Catfish deserves its place on your protein rotation, and with the right strategy, it will help you reach your goals.