Baked catfish is a genuinely healthy protein source. A 3-ounce serving delivers 17 grams of protein for just 130 calories, with only 2 grams of saturated fat. It’s low in mercury, rich in B vitamins, and lands on the FDA’s “Best Choices” list for seafood. Baking it rather than frying preserves that strong nutritional profile without adding excess oil or breading.
Calories, Protein, and Fat Per Serving
A 3-ounce cooked portion of catfish, roughly the size of a deck of cards, breaks down like this:
- Calories: 130
- Protein: 17 g
- Total fat: 6 g
- Saturated fat: 2 g
That protein-to-calorie ratio is competitive with chicken breast, and the fat content is modest. Compare that to a breaded, deep-fried catfish fillet, which can easily double the calories and triple the fat once you account for the coating and cooking oil. Baking is what keeps catfish in the “lean protein” category.
Omega-3s and Key Micronutrients
Catfish sometimes gets dismissed as a poor source of omega-3 fatty acids compared to salmon, but the numbers tell a more nuanced story. Blue catfish provides roughly 599 milligrams of EPA and DHA combined per 100-gram serving. That’s less than salmon, which can deliver over 1,000 milligrams, but it’s still a meaningful contribution toward the general recommendation of at least 250 to 500 milligrams per day of these heart-protective fats.
Where catfish really stands out is vitamin B12. A single serving provides about 121% of the Daily Value, making it one of the more concentrated food sources of a vitamin that supports nerve function and red blood cell production. You’ll also get 26% of the Daily Value for selenium, a mineral that plays a role in thyroid health and acts as an antioxidant in the body.
Mercury Levels Are Very Low
Mercury is the main safety concern most people have about eating fish, and catfish performs well here. FDA monitoring data shows catfish has an average mercury concentration of just 0.024 parts per million. To put that in context, canned light tuna averages 0.126 ppm, cod sits at 0.111 ppm, and high-mercury fish like swordfish reach 0.995 ppm. Catfish is comparable to salmon (0.022 ppm) and only slightly above shrimp (0.009 ppm).
This low mercury level is why the EPA and FDA place catfish on their “Best Choices” list, the highest safety tier for seafood. Fish in that category are safe to eat two to three servings per week, including for pregnant women and young children. The Dietary Guidelines for Americans specifically names catfish among the lowest-mercury options recommended for children.
One caveat: if you’re eating catfish caught recreationally from local rivers or lakes, check your state’s fish advisories. Larger catfish from certain waterways can accumulate higher levels of mercury or other contaminants than the commercially farmed fish these averages reflect.
Farm-Raised vs. Imported Fish
Most catfish sold in U.S. grocery stores is farm-raised, and the domestic product carries strong safety credentials. U.S. farm-raised catfish falls under mandatory federal inspection by the USDA’s Food Safety and Inspection Service, which verifies sanitation, food safety procedures, and labeling. These fish are not given hormones, and they aren’t routinely raised with antibiotics. When antibiotics are necessary to treat illness, a mandatory withdrawal period ensures no residues remain in the fish before harvest. Random drug residue testing adds another layer of oversight.
You may also see frozen fillets labeled “basa,” “swai,” “striped pangasius,” or “tra” at the store. These are related fish species imported primarily from Vietnam. They cannot legally be labeled “catfish” in the United States, but they’re often sold alongside it. Imported pangasius species are not subject to the same USDA inspection framework as domestic catfish, so if food safety standards matter to you, look for the “U.S. Farm-Raised Catfish” label.
How Baked Catfish Compares to Other Proteins
Stacked against other common proteins, baked catfish holds its own. It has fewer calories than a comparable serving of 85% lean ground beef (around 218 calories) and less saturated fat than most cuts of pork. Compared to other popular fish, it’s fattier than cod or tilapia but lower in mercury than tuna and more affordable than salmon in most markets.
The main nutritional trade-off is omega-3 content. If your primary goal is maximizing omega-3 intake, salmon and sardines deliver more per serving. But if you’re looking for an affordable, low-mercury fish with solid protein, good B12, and a mild flavor that works well baked with simple seasonings, catfish checks every box. Eating it two to three times a week fits comfortably within federal dietary guidance and contributes meaningfully to your weekly seafood intake.
Tips for Keeping It Healthy
The “baked” part of baked catfish is doing a lot of nutritional work. A light coating of olive oil, a squeeze of lemon, and seasoning with garlic, paprika, or cajun spice keeps calories low while adding flavor. Where people run into trouble is recreating the fried catfish experience in the oven by using heavy breading or butter-based sauces, which can push a 130-calorie fillet well past 300 calories.
Pairing baked catfish with roasted vegetables or a grain like brown rice creates a balanced meal without much effort. Because the fish is mild-flavored and cooks quickly (usually 12 to 15 minutes at 400°F for a standard fillet), it’s one of the easier weeknight proteins to prepare, which makes it practical to eat regularly enough to get the cumulative health benefits of consistent seafood consumption.