VU

Harttia dissidens

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Harttia dissidens faces primary threats from habitat degradation in its restricted range within Brazilian river systems. Dam construction and water diversions alter the fast-flowing rocky substrates essential for this armored catfish's survival. Agricultural runoff and urban pollution further compromise water quality in the watersheds where this species occurs.

Threat summary

Habitat

This armored catfish inhabits fast-flowing rocky streams and rivers in southeastern Brazil, typically found clinging to stone substrates in well-oxygenated waters. The species requires clear, swift currents with rocky or gravelly bottoms characteristic of highland drainage systems.