Steindachneridion amblyurum
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Steindachneridion amblyurum faces severe pressure from dam construction across its native river systems in southern Brazil, which fragments populations and alters natural flow regimes essential for spawning. Overfishing has significantly reduced population numbers, while agricultural runoff and industrial pollution degrade water quality in the Paraná River basin. The species' large body size and slow reproductive rate make it particularly vulnerable to these combined pressures.
Habitat
This large catfish inhabits deep pools and main channels of major rivers in the Paraná River basin, particularly the Paraná, Paraguay, and Uruguay river systems. It prefers areas with rocky or sandy substrates and strong currents, typically found at depths of 5-30 meters in well-oxygenated waters.
