Leporinus piavussu
The piavuçu (Leporinus piavussu) is one of the larger members of the Anostomidae family in Brazil, native to the upper Rio Paraná basin.
Anglers in the São Paulo and Mato Grosso do Sul regions target it for its size and the challenge it puts up on light to medium tackle. Formally described only in 2012, it was long confused with closely related species like L. obtusidens.
Scientific Name: Leporinus piavussu
Also known as piavuçu, piavussu, piabuçu, piabussu, piau-uçu
- Elongated, torpedo-shaped body with a small terminal mouth — the cleft sits above the horizontal through the lower eye margin, distinguishing it from close relatives whose mouths point downward.
- Silvery flanks with dark blotches or bars that can fade in larger fish; a distinct dark blotch on the caudal peduncle is a key field mark.
- 16 scale rows around the caudal peduncle and 39–41 perforated scales along the lateral line separate it from the very similar L. obtusidens (41–44 lateral-line scales).
- A genuinely large Leporinus — related Megaleporinus macrocephalus reaches 27 in / 5.3 kg; piavuçu runs in a comparable size class for the upper Paraná.
What to know
Habitat Distribution
- Native to the upper Rio Paraná basin in Brazil; the type locality is the Rio Mogi Guaçu at Cachoeira de Emas, near Pirassununga, São Paulo.
- A freshwater species of large rivers and their tributaries — found in the main channel and connected floodplain habitats of the upper Paraná drainage.
- Pairs breed in densely vegetated areas with submerged aquatic plants, so weedy backwaters and flooded margins are part of its seasonal range.
Key Locations
- Rio Mogi Guaçu, São Paulo — the type locality at Cachoeira de Emas is a historically documented site for this species.
- Upper Rio Paraná basin broadly, including tributaries in São Paulo and Mato Grosso do Sul states.
Specific Spots
- Weedy backwaters and flooded margins during the breeding season — dense submerged vegetation is where pairs set up and where juveniles shelter.
- Rocky rapids and current breaks in the main river channel, where the small terminal mouth is well suited to grazing algae and plant material off hard substrate.
- Deeper pools below waterfalls and cascades — spots like Cachoeira de Emas on the Rio Mogi Guaçu are classic holding areas for large individuals.
Leporinus piavussu FAQ
Answers from onWater's species guide.
What are the best lures and bait for Leporinus piavussu?
Natural baits dominate: corn kernels, bread dough, fruit pieces (especially figs and berries when in season), and earthworms fished on the bottom are the most consistent producers.
When is the best time to fish for Leporinus piavussu?
Wet season (roughly October–March): fish move upstream on spawning migrations (piracema), concentrating below rapids and waterfalls, prime time for larger individuals.
How do you catch Leporinus piavussu?
Most anglers fish for piavuçu from the bank or anchored boats, presenting natural baits on bottom rigs near rocky drops, current breaks, and weedy margins. Targeting the deeper pools below rapids and waterfalls, especially during and just after the wet-season migration, puts you in front of the largest fish.
What do Leporinus piavussu eat?
Primarily plant material, algae, aquatic vegetation, fruits, and seeds that fall into the river. The small, chisel-like teeth are built for cropping, not grabbing. Bottom-bounced baits like corn, bread dough, or fruit pieces match this feeding style well.
Where do Leporinus piavussu live?
Native to the upper Rio Paraná basin in Brazil; the type locality is the Rio Mogi Guaçu at Cachoeira de Emas, near Pirassununga, São Paulo. A freshwater species of large rivers and their tributaries, found in the main channel and connected floodplain habitats of the upper Paraná drainage.
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