Aracu branco
Aracu branco (Leporinus brunneus) is a slender Amazonian characin native to the Rio Negro and Rio Madeira drainages in Brazil.
It shows up in subsistence and artisanal catches across the Central Amazon and is part of the broader 'aracu' commercial fish group that collectively accounts for thousands of tons of annual harvest.
Not a primary sport target, but encountered by anglers fishing the blackwater rivers of the Amazon basin.
Scientific Name: Leporinus brunneus
Also known as Aracu branco, aracu-cabeça-gorda, piava
- Very slender, torpedo-shaped body — depth runs only 18–23% of body length, noticeably more elongated than most other aracu species.
- Adults show cherry-red coloration on all fins and the lower head; upper jaw is darkly pigmented, giving the appearance of a dark mustache.
- Caudal fin has a broadly blackened distal margin; a lateral stripe, when present, runs from the gill cover to the tip of the middle tail rays.
- Largest recorded specimen measured about 256 mm (roughly 10 inches); a modest-sized fish by Amazon standards.
What to know
Habitat Distribution
- Native to Brazil in the Rio Negro and Rio Madeira basins; also found in the Orinoco system of Venezuela and Colombia, but its Brazilian range centers on these two major Amazon tributaries.
- A freshwater, tropical species that occupies the benthopelagic zone — found near the bottom and in mid-water of rivers and associated flooded areas.
- Like other aracu, it moves into flooded forest (várzea and igapó) during high water, taking advantage of submerged vegetation and fruit fall.
- Prefers acidic, blackwater conditions typical of the Rio Negro drainage.
Key Locations
- Rio Negro drainage, Amazonas state — the blackwater rivers here represent the core Brazilian range for L. brunneus.
- Rio Madeira basin — the other major Brazilian drainage where this species is documented.
- Central Amazon floodplain — the broader aracu group accounts for the majority of commercial aracu landings in this region.
Specific Spots
- Flooded forest margins during the wet season — aracu move into the trees to feed on fallen fruit and invertebrates among the roots and leaf litter.
- Weedy or densely vegetated areas near river edges, where pairs also breed; structure like submerged branches and root tangles concentrate fish.
- Deeper channel edges and current breaks in the Rio Negro and Rio Madeira, particularly during low water when fish pull back from flooded areas.
Aracu branco FAQ
Answers from onWater's species guide.
What are the best lures and bait for Aracu branco?
Small natural baits, worms, fruit pieces, and dough or masa-style baits, are the traditional approach; aracu respond to food items that match their omnivorous diet rather than predator-style lures. Small hooks (size 6–10) fished near flooded forest edges or weedy margins during high water put anglers in the right zone.
When is the best time to fish for Aracu branco?
Wet season (roughly November–May in the Amazon) brings aracu into flooded forest, where they feed actively on fruits and seeds, incidental catches increase during this period. Migration runs during the transition between high and low water concentrate fish and drive the bulk of commercial aracu harvest.
How do you catch Aracu branco?
Aracu branco is not specifically targeted by sport anglers in Brazil; it appears in subsistence and artisanal catches, primarily taken during seasonal migration runs with gill nets or on simple handlines baited with worms, fruit, or dough near flooded forest edges and weedy river margins.
What do Aracu branco eat?
Omnivorous, eating fruits, seeds, algae, and invertebrates, during the wet season, fallen fruits and seeds from flooded forest are a primary food source, making small floating or surface presentations near tree lines worth trying.
Where do Aracu branco live?
Native to Brazil in the Rio Negro and Rio Madeira basins; also found in the Orinoco system of Venezuela and Colombia, but its Brazilian range centers on these two major Amazon tributaries.
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