Many species of fish look like other fish at first glance, but a catfish looks only like a catfish. Covered in skin, not scales, catfish are smooth, muscled bruisers.
Members of the catfish family have barbels around their mouths — whiskers they use to taste their environment. In fact, they taste with some of the skin covering their bodies and, for that reason, they’ve been called “swimming tongues.” They have grown in popularity as sportfish due to their large size, good taste, and tackle-busting fight. In this article, you discover the four most popular species of catfish.
When you handle a catfish, especially a small one, be wary of its pectoral and dorsal fins. The projecting spines are very sharp, especially on younger specimens. Though not fatal, a wound from these spines can be nasty and painful. If you are pricked while handling a catfish, treat the wound immediately with a disinfectant because swift action often nullifies the bacteria.
Blue catfish: King of the big water
Blue catfish (see the following figure) are the kings of big rivers. Although they also appear in some large reservoirs, blue cats thrive in the rolling, rollicking waters of wide rivers such as the Ohio, Mississippi, and Missouri, and also in tidal rivers such as the James. They feed primarily on fish like skipjack herring and gizzard shad. A ferocious fighter when hooked, blues attain sizes in the triple digits. Because blues are big fish found in big waters, anglers often fish from boats using heavy rods and reels to cast or drift big chunks of cutbait (cut fish). Despite the myth that catfish feed only at night, blues are active day and night and can be caught during the winter months, as well. They can be found near the bottom, but they also suspend throughout the water column.
Notice the broad, muscled body of the blue catfish, which is built for big water.
Flathead catfish: Denizens of the deep lair
Similar to the blue catfish, flathead cats can weigh more than 100 pounds, and they also thrive in America’s big rivers, reservoirs, and lakes. However, flatheads tolerate muddier, slower water better than blues, and can be found in some surprising small streams. Flathead catfish feed on crustaceans and small minnows while young, but adults subsist on a diet of primarily fish (some of them quite large!). Although anglers occasionally catch flatheads on nightcrawlers or cutbait, most foraging flatheads prefer a struggling, live-hooked baitfish. Flatheads are most likely to be caught at night, when they leave the logjams and rock piles they take shelter around during the day. Flatheads live in nasty environs and have an attitude to match. Anglers targeting them use heavy tackle (think 80-pound braided line) and expect to horse them out of gnarly cover.
The flathead catfish is all mouth.
Channel catfish: Prince of the pond
Channel catfish taste great, which is why they’re raised on fish farms throughout the South. When you order “farm-raised catfish,” you’re getting channel catfish on your plate. But channel cats make great quarry for all anglers. They hit hard and fight long, and will outpull almost all fish of similar size. An extremely adaptive fish, channel cats can be found in everything from the largest rivers to the smallest ponds. They feed on everything from fish to insects, and grow quickly as a result. They can be caught on prepared stinkbaits, grocery store baits such as cheese and hot dogs, and natural baits like nightcrawlers and minnows. (Sometimes, anglers catch them on lures meant for bass or walleye.) They will hit night or day, and when in rivers or streams, can be found feeding in surprisingly swift current. Channel catfish are not as big as their blue and flathead cousins, but a channel of more than 20 pounds is possible, and it will fight like nothing else.
The adaptive channel cat is one of the most popular gamefish.
Bullhead catfish: Tough as they come
Rounding out the catfish lineup are the bullheads — small catfish commonly found in small ponds, streams, and lakes. Although there are different species of bullheads — including brown, black, and yellow bullheads — all bullheads feed on crustaceans, fish, and insects, and so are easily caught by anglers fishing with bait such as worms. Highly tolerant of low oxygen levels and pollution, bullheads live in waters that would fail to support other fish life. In the event of a nuclear holocaust, providing you survive, go fishing for bullheads. They should still be there.
Bullheads aren’t big, but they sure are tough.