Catfish and Southern Freshwater Fish: A Buyer’s Guide

Long before catfish showed up breaded and golden on a restaurant menu, it was pulled fresh from rivers, ponds, and lakes across the South, along with a handful of other freshwater fish that don’t get quite as much credit. Understanding what makes catfish different from other white fish, and what else swims alongside it in Southern waters, makes for a smarter trip to the fish counter and a better fry at home.

What Makes Catfish Catfish

Catfish are easily recognized by their smooth, scaleless skin and the distinctive whisker-like barbels around their mouths, which they use to feel their way along murky river and pond bottoms in search of food. That bottom-feeding habit used to give catfish a muddy reputation, but modern farm-raised catfish, which now makes up the vast majority of what’s sold commercially, is raised in clean, controlled ponds specifically to avoid that issue, and it’s a far more consistent, mild-tasting product than wild-caught catfish tends to be.

The flesh itself is firm, white, and mild, with a slightly sweet flavor and a texture that holds together well whether it’s fried whole, cut into fillets, or turned into a stew. Channel catfish is the variety most commonly farmed and sold, prized for its consistent size, mild flavor, and reliable availability, while wild-caught catfish, including larger species like blue catfish and flathead catfish, tend to have a more pronounced, sometimes muddier flavor depending on where and how they were caught.

Other Southern Freshwater Fish Worth Knowing

Catfish is far from the only freshwater fish with deep roots in Southern cooking. A few others show up regularly at fish fries, on riverbanks, and at bait shops turned small seafood counters across the region:

• Crappie — a small, panfish-sized freshwater fish with delicate, flaky white meat, popular with anglers and prized for frying whole or as small fillets.
• Bream, sometimes called bluegill or perch locally — another small panfish, mild and sweet, often fried whole after scaling and gutting, bones and all, and eaten carefully around the small rib bones.
• Buffalo fish — a larger, bonier freshwater fish related to the sucker family, traditionally scored heavily before frying to break down the small bones, common in parts of the Mississippi Delta.
• Bass — largemouth and other freshwater bass varieties show up on Southern tables too, with a firmer texture and slightly more assertive flavor than catfish or the smaller panfish.

Most of these smaller panfish are more likely to come from a friend with a fishing rod than a grocery store shelf, but specialty fish markets in areas close to major rivers and lakes sometimes carry them, particularly around fish fry season in the warmer months.

Choosing Good Catfish at the Market

When buying catfish, whether whole, as fillets, or as smaller nuggets, look for flesh that’s firm to the touch and free of any strong, overly fishy odor. Fresh catfish should smell clean and mild, almost like water, rather than sharp or ammonia-like. Fillets should look moist and slightly translucent rather than dry, chalky, or discolored at the edges.

Farm-raised catfish, which dominates the market, is generally a safe and consistent choice for flavor, and it’s worth checking the label or asking at the counter, since farm-raised catfish tends to have a milder, cleaner taste than wild-caught. If you do have access to wild-caught catfish, particularly from a trusted local source, it can have a deeper, more distinctive flavor, though some cooks find it needs a bit more seasoning or a soak in buttermilk to mellow out any stronger taste.

Cooking and Storage Tips

The classic preparation is simple: a soak in buttermilk or seasoned milk, a dredge in cornmeal, and a hot oil fry until the coating turns deep golden and crisp. Catfish also holds up well to baking, blackening in a hot cast iron skillet, or simmering in a stew, thanks to its firm texture that doesn’t fall apart the way more delicate fish can.

Fresh catfish should be cooked within a day or two of purchase, or frozen if you’re not ready to use it right away. Wrapped tightly and frozen, catfish fillets keep well for a couple of months without significant quality loss. Thaw frozen fillets in the refrigerator overnight rather than at room temperature, and pat them dry before cooking, since excess surface moisture keeps a cornmeal coating from crisping up properly in the fryer.