Freshwater

Boga

Megaleporinus obtusidens

Guide by Captain Big Joe (Joe Arias)

Freshwater

At a glance

Typical size

Most catches are smaller than the top size of about 30 in (76 cm).

Depth

3–20 ft.

Best time

Early morning and late afternoon.

Found in

1 area

Spot it, size it up and learn its habits.

Identification: Silvery, torpedo-shaped fish with a small mouth, dark blotches along the side, and an olive back.
Typical size: Most catches are smaller than the top size of about 30 in (76 cm).
Maximum size: Up to about 30 in (76 cm) long and 13 lb (5.8 kg). Source: FishBase
Diet: It eats both plants and animals.
Behavior: Adults live in medium to large rivers and make very long feeding and spawning migrations. It also lives in ponds.

Where, when and how deep to look.

Where to find it: Found from Paraná & Uruguay Rivers.
Habitat: Current edges, sandbars and rocky banks of the Paraná, Uruguay and Paraguay rivers.
Depth: 3–20 ft.
Fishing depth: 3–25 ft along banks, rock piles, current seams and lagoon edges.
Best season: The dry season, when the water drops and fish concentrate in the channels and lagoons; rivers close during the spawning season (in Brazil, the piracema, about November to February).
Best time: Early morning and late afternoon.
Best tides: No tide — falling water after the rainy season is best.
Best weather / conditions: Stable weather with clear water; sudden rains muddy the rivers.

What to tie on and what to throw.

Best bait: Dough baits, corn, cheese and earthworms.
Best artificial lures: Rarely; small spinners.
Tackle setup: 7 ft medium-heavy baitcasting or spinning rod; 8–9 weight fly rod.
Hook size: Strong 2/0–6/0 single hooks; many guides replace trebles with single hooks to protect the fish.
Line: 40–65 lb braid.
Leader: Wire or 60–80 lb fluorocarbon for toothy fish.

The rod, reel, line and lures BigJoe would use.

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Step by step, from first cast to landing.

Go where it lives: Current edges, sandbars and rocky banks of the Paraná, Uruguay and Paraguay rivers.
Rig up: 7 ft medium-heavy baitcasting or spinning rod; 8–9 weight fly rod. Wire or 60–80 lb fluorocarbon for toothy fish.
Pick your bait: Dough baits, corn, cheese and earthworms. Lures: Rarely; small spinners.
Fish it: Fish a dough or corn bait on the bottom near the current, often after chumming with corn. Boga bite softly, then pull hard.
Time it: Early morning and late afternoon. No tide — falling water after the rainy season is best.

Fishing techniques: Fish a dough or corn bait on the bottom near the current, often after chumming with corn. Boga bite softly, then pull hard.
BigJoe's tip: Use a light rod and small hooks. Boga are smart and quick to drop a 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.

Is it good to eat, and how to prepare it.

Edibility: Good eating when fresh.
Cleaning: Bleed and ice it right away. Fillet, then remove the skin and any dark bloodline.
Cooking suggestions: Rich and tasty, a favorite on the grill in Argentina and Uruguay.

Safety, rules and taking care of the fishery.

Safety warnings: Sharp teeth on many river fish (dorado, payara, piranha, tararira) — use pliers and lip grips. Caimans, stingrays and strong currents are real hazards; shuffle your feet when wading.
Regulations: Minimum sizes and closed seasons apply; check the 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: Keep only what you'll eat, release the rest quickly, and follow size and bag limits.

Tap an area to open its fishing map.

Sources & photo credits