EN

Harttia depressa

Unknown

Overview

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

Harttia depressa faces severe pressure from habitat degradation in its restricted range within Brazilian river systems. Dam construction and water diversions have altered natural flow regimes essential for this bottom-dwelling catfish's survival. Agricultural runoff and urban pollution further compromise water quality in the watersheds where this species occurs, while deforestation in surrounding areas increases sedimentation that can smother the rocky substrates it depends upon.

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 clean, clear waters with stable rocky bottoms where it can graze on algae and organic matter.

Other threatened species in LORICARIIDAE

EN

Ancistrus minutus

Declining
VU

Harttia dissidens

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EN

Pseudotocinclus tietensis

Unknown
EN

Chaetostoma stannii

Unknown

Frequently asked questions

Why is Harttia depressa classified as Endangered?
Harttia depressa is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Harttia depressa faces severe pressure from habitat degradation in its restricted range within Brazilian river systems. Dam construction and water diversions have altered natural flow regimes essential for this bottom-dwelling catfish's survival. Agricultural runoff and urban pollution further compromise water quality in the watersheds where this species occurs, while deforestation in surrounding areas increases sedimentation that can smother the rocky substrates it depends upon.
Where does Harttia depressa live?
Harttia depressa occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Harttia depressa?
The main threats to Harttia depressa are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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