Leporinus tristriatus
Three dark stripes running head to tail give this small Amazonian headstander its name — tristriatus, Latin for 'three-striped.' Described by science only in 2013, it lives in fast, rocky upland streams of the Brazilian Amazon and tops out around 10 cm.
It sits squarely in the realm of ichthyology rather than angling.
Scientific Name: Leporinus tristriatus
- Three dark longitudinal stripes run the full length of the body — the defining mark that separates this species from similarly patterned Leporinus relatives.
- Elongated, moderately compressed body with a subinferior (underslung) mouth; diagnostic details include three teeth on the premaxilla, four on the dentary, and twelve scale rows around the caudal peduncle.
- Maximum recorded size is 10.1 cm standard length — small even within a genus that includes many compact species.
What to know
Habitat Distribution
- Entire known range sits within three Brazilian Amazon drainages — the Tocantins, Xingu, and Tapajós river basins — a tight geographic footprint for any freshwater fish.
- A fast-water specialist: clear, swift-flowing small rivers with rocky substrates in upland Amazonian terrain, living close to the bottom in the current.
Specific Spots
- Rocky runs and riffles in small upland tributaries, where current sweeps food toward the substrate and high dissolved oxygen supports benthopelagic life near the streambed.
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