VU

Steindachneridion amblyurum

Declining

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.

Threat summary

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.

Other threatened species in PIMELODIDAE

EN

Steindachneridion punctatum

Unknown
EN

Steindachneridion scriptum

Declining
EN

Conorhynchos conirostris

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VU

Pimelabditus moli

Unknown

Threatened in Mauritius

VU

Trindade Petrel

Pterodroma arminjoniana

Stable
EN

Acropora mossambica

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Humped BladderwortCR

Humped Bladderwort

Utricularia gibba

Unknown
Telfair's SkinkVU

Telfair's Skink

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Increasing

Frequently asked questions

Why is Steindachneridion amblyurum classified as Vulnerable?
Steindachneridion amblyurum is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. 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.
Where does Steindachneridion amblyurum live?
Steindachneridion amblyurum occurs in Mauritius. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Steindachneridion amblyurum?
The main threats to Steindachneridion amblyurum 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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