Cod is one of the leanest white fish in the seafood aisle, and its natural carbohydrate count is essentially zero — usually 0 g per 100 g whether you eat it raw, baked, broiled, or poached. That makes it a favorite for low-carb, keto, diabetic, and clean-eating meal plans. But the picture changes the moment …

Catfish is one of the most popular freshwater fish on American tables, but its fat content varies widely depending on whether it was farm-raised or wild-caught, and how it is prepared. Raw farmed catfish contains about 5.5 g of fat per 100 g, while wild catfish has closer to 2.8 g. Frying with breading can …