Flathead Catfish tackle guide
A heavyweight catfish that mostly eats live fish. Strong line and circle hooks help pull big fish from snags.
Last reviewed 26 September 2026 · Editorial policy
The short answer
- Main line
- 20–50 lb
- Rod
- Heavy to Extra-Heavy, 7–8.5 ft
- Reel
- Large baitcaster or 5000–8000 spinning
- Hooks
- Circle hooks 5/0–10/0
- Typical weight
- 5–40 lb for average fish
- Best conditions
- Warm months, at night, around deep wood and cover.
Where they live and what they eat
Habitat
Large rivers and reservoirs; deep holes, log jams and heavy woody cover.
Feeding
Predator that prefers live fish; most active at night, moving out of cover to hunt.
How to fish for flathead catfish
Practical tips
- Live baitfish outperform cut or prepared baits for flatheads — check local live-bait rules.
- Circle hooks hook fish in the corner of the mouth; let the rod load rather than striking hard.
- Anchor near, not on top of, the wood cover.
Flathead Catfish vs other species
Against similar species
| Species | Main line | Rod power | Hook sizes |
|---|---|---|---|
| Flathead Catfish | 20–50 lb | Heavy to Extra-Heavy | Circle hooks 5/0–10/0 |
| Largemouth Bass | 10–20 lb | Medium to Medium-Heavy, fast action | 1/0–5/0 worm hooks; 2–1/0 trebles on hard baits |
| Smallmouth Bass | 6–12 lb | Medium-Light to Medium, fast action | 1–2/0 finesse hooks; size 1–4 trebles |
| Rainbow Trout | 4–8 lb | Light to Ultralight, moderate action | Size 8–14 bait hooks; size 10–18 flies |
| Brown Trout | 4–10 lb | Light, moderate action | Size 6–14 hooks; size 8–18 flies |
Flathead Catfish through the year
See the full flathead catfish seasonal guide for month-by-month patterns and tactics.
Common questions
What line strength should I use for flathead catfish?
Most anglers use 20–50 lb (about 9–23 kg) main line. Go heavier around snags and cover, lighter in clear, open water.
What rod is best for flathead catfish?
A heavy to Extra-Heavy rod of around 7–8.5 ft covers most situations.
What reel size do I need for flathead catfish?
Large baitcaster or 5000–8000 spinning.
What hook size for flathead catfish?
Circle hooks 5/0–10/0. Match the hook to the bait size rather than the fish size.
What are the best techniques for flathead catfish?
Proven methods include Live Bait Rig, Legering / Bottom Bait.
Where do flathead catfish live?
Large rivers and reservoirs; deep holes, log jams and heavy woody cover.
When is the best time to catch flathead catfish?
Warm months, at night, around deep wood and cover. Always check local seasons and rules.