Freshwater Species Guide
Flathead Catfish
Pylodictis olivaris · Ictaluridae
At a Glance
Ideal Temp
70–85°F
Typical Weight
5–40 lbs
Record Weight
123 lbs 9 oz
Average Length
20–36 inches
Lifespan
20–25 years
Peak Activity
Night
Skill Level
Intermediate
Overview
Flatheads are the lone wolves of the catfish world. While channel cats will scavenge anything, flatheads insist on live, kicking prey. Big bluegill, live perch, small carp — these fish are ambush hunters that set up in the deepest holes of major rivers and wait for something alive to swim by. They grow to 100+ lbs and are the premier trophy for serious river catfish anglers.
Habitat
Big timber, deep river bends, and submerged log jams. Flatheads stake out territory in the deepest holes of major rivers and large reservoirs. During the day they're buried under heavy structure; at night they move to shallow flats to actively hunt.
Feeding Behavior
Strictly live prey. Flatheads are almost exclusively predatory and won't reliably touch dead or cut bait — a key difference from other catfish. Large live bluegill hooked through the back is the all-time standard. Feeding peaks at night, especially in summer.
Spawning
Spawn in late spring and early summer when water hits 75–80°F. Males prepare cavities under logs or bank undercuts. Females deposit eggs, then leave. Males guard the nest aggressively until fry disperse.
Seasonal Patterns
Spring
Moving from wintering holes toward summer structure. Pre-spawn feeding begins.
Summer
Peak activity. Hunt shallow flats at night from deep daytime lairs.
Fall
Feeding heavily before winter slowdown. Still active until water drops below 60°F.
Winter
Lethargic and grouped in deepest river holes. Rarely feed in extreme cold.
Top Lures for Flathead Catfish
Best Techniques
Pro Tips
Live bluegill hooked just below the dorsal fin is the all-time best flathead bait — nothing else comes close in most river systems.
Fish the deepest hole in a river bend with heavy tackle. 50 lb braided line on a 7'6" heavy rod is not overkill for a 60-lb fish buried in timber.
Flatheads are territorial. If you catch one from a spot, another fish will often move in to claim that hole within days.
Night fishing in summer is far more productive than daytime. Set up at the edge where deep holes transition to shallow feeding flats.
Did You Know
Flathead catfish can live 20+ years. The world record stands at 123 lbs 9 oz — but biologists believe even larger fish exist undisturbed in the depths of major river systems. They are slow-growing, long-lived predators built for a life of patience.
Regulations Note
Check state minimums — large fish should be released.
Plan Your Next Trip
Get Your Flathead Catfish Strike Plan
Enter your location and date — the Darkhorse Strike Plan pulls live weather, barometric pressure, and solunar data to give you exact lures and techniques for today.