At a glance
3–10 lb.
15–60 ft.
Night.
3 areas
Know it
Spot it, size it up and learn its habits.
- Identification
Sleek, silvery-gray catfish with a slim body, a forked tail, a darker back with small dark spots, and long whiskers.
- Typical size
3–10 lb.
- Maximum size
About 3½ ft and over 20 lb.
- Diet
Fish, especially sábalo.
- Behavior
Hunts in the main channels and follows the sábalo schools; most active at night.
Find it
Where, when and how deep to look.
- Where to find it
Found from Paraná & Uruguay Rivers, Paraguay, Argentina & Uruguay Lakes and Southern Brazil, Uruguay & Argentina. Main channels and deep holes of the Paraná, Uruguay and Paraguay rivers and the Río de la Plata.
- Habitat
Main channels and deep holes of the Paraná, Uruguay and Paraguay rivers and the Río de la Plata.
- Depth
15–60 ft.
- Fishing depth
On the bottom in 15–40 ft.
- Best season
Autumn and winter are classic in Argentina.
- Best time
Night.
- Best tides
No tide — in rivers, falling water after the rainy season is best.
- Best weather / conditions
Stable weather.
Bait & gear
What to tie on and what to throw.
- Best bait
Cut sábalo, morena and small fish.
- Best artificial lures
Rarely.
- Tackle setup
Medium-heavy rod.
- Hook size
3/0–6/0.
- Line
30–50 lb braid or mono.
- Leader
50–60 lb mono.
BigJoe's setup for Patí catfish
The rod, reel, line and lures BigJoe would use.
Also at Bass Pro Shops: RodReelLineHooksWeightRigHolder
See BigJoe's full gear guide →As an Amazon Associate, BigJoe earns from qualifying purchases. It costs you nothing extra and helps keep this guide free.
Catch it
Step by step, from first cast to landing.
Step-by-step: how to catch it
- Go where it lives: Main channels and deep holes of the Paraná, Uruguay and Paraguay rivers and the Río de la Plata.
- Rig up: Medium-heavy rod. 50–60 lb mono.
- Pick your bait: Cut sábalo, morena and small fish. Lures: Rarely.
- Fish it: Anchor at the edge of the main channel at night and fish cut sábalo on the bottom with a sliding sinker.
- Time it: Night. No tide — in rivers, falling water after the rainy season is best.
- Fishing techniques
Anchor at the edge of the main channel at night and fish cut sábalo on the bottom with a sliding sinker.
- BigJoe's tip
Fresh sábalo cut bait is by far the best bait.
- Catch and release
Catch and release: wet your hands, keep the fish in the water when you can, and release it quickly. Use circle hooks and a dehooker.
Clean & cook
Is it good to eat, and how to prepare it.
- Edibility
Excellent eating — one of the best-tasting fish in its range.
- Cleaning
Bleed and ice it right away. Fillet, then remove the skin and any dark bloodline.
- Cooking suggestions
One of the most prized river fish in Argentina — tender, fatty white meat, great grilled or in stews.
Stay safe & legal
Safety, rules and taking care of the fishery.
- Safety warnings
Sharp pectoral and dorsal spines.
- Regulations
Argentine provinces set minimum sizes and bag limits; check local rules. Every country requires a fishing license (in Brazil, the Licença de Pesca Amadora), each Argentine province and Brazilian state adds its own rules, and most rivers close during the spawning season. Indigenous lands and strict reserves are closed to outside anglers without permits.
- Conservation
Popular in markets; follow size limits.
Where it's found
Tap an area to open its fishing map.