Leporinus taeniofasciatus
One of the lesser-known toothed headstanders of the Anostomidae family, this species is confined to the Tocantins River basin in Brazil — a single drainage that has been dramatically reshaped by hydroelectric impoundment.
Reaching just over 30 cm, it sits at the margins of what most anglers would call a sport fish, but it represents the kind of quiet ecological complexity that makes Neotropical freshwater systems endlessly interesting to those who study them.
Scientific Name: Leporinus taeniofasciatus
- Females reach up to 31.5 cm standard length; males top out around 27.8 cm — making this a modestly sized fish with noticeable sexual size dimorphism.
- Maximum published weight is around 600 grams; body form is typical of Anostomidae, with a small toothed mouth suited for grazing rather than pursuing prey.
What to know
Habitat Distribution
- Confined to the Tocantins River basin in Brazil — a range restricted enough that changes to a single watershed can affect the entire species.
- Benthopelagic in habit, spending time in the water column near the bottom in both free-flowing river reaches and the reservoir conditions created by dam impoundment.
Specific Spots
- Weed-choked shallows and densely vegetated margins are where pairs set up for breeding — the cover provides both spawning substrate and protection for guarded eggs.
- Bottom zones where organic matter accumulates draw foraging fish, particularly in reservoir environments where flooding introduces terrestrial material into the water column.
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