EN

Parosphromenus filamentosus

Unknown

Overview

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

Parosphromenus filamentosus faces severe habitat degradation from palm oil plantation expansion and logging activities throughout its native peat swamp forests in Peninsular Malaysia and southern Thailand. Water pollution from agricultural runoff and urban development has compromised the acidic, tannin-rich water chemistry essential for this species' survival. The aquarium trade has also contributed to population declines, with wild-caught specimens frequently exported despite their specialized habitat requirements making captive breeding challenging.

Threat summary

Habitat

This species inhabits shallow, slow-moving streams and pools within pristine peat swamp forests, requiring highly acidic water (pH 3.0-5.5) rich in tannins and humic acids. The fish depends on dense aquatic vegetation and fallen leaf litter that creates the dark, soft-water conditions characteristic of undisturbed Southeast Asian peat swamps.

Wetlands (inland) - Bogs, marshes, swamps, fens· major

Conservation measures underway

Resource & habitat protectionSpecies managementSpecies recoveryAwareness & communications

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Frequently asked questions

Why is Parosphromenus filamentosus classified as Endangered?
Parosphromenus filamentosus 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. Parosphromenus filamentosus faces severe habitat degradation from palm oil plantation expansion and logging activities throughout its native peat swamp forests in Peninsular Malaysia and southern Thailand. Water pollution from agricultural runoff and urban development has compromised the acidic, tannin-rich water chemistry essential for this species' survival. The aquarium trade has also contributed to population declines, with wild-caught specimens frequently exported despite their specialized habitat requirements making captive breeding challenging.
Where does Parosphromenus filamentosus live?
Parosphromenus filamentosus occurs in Indonesia, and Malaysia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Parosphromenus filamentosus?
The main threats to Parosphromenus filamentosus 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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