Wavy Waternymph
CR

Wavy Waternymph

Najas flexilis

UnknownVUEUVUEU

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Najas_flexilis

Overview

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

Wavy Waternymph faces severe threats from habitat degradation due to water pollution, eutrophication, and sedimentation that degrade the clear, nutrient-poor waters it requires. Urban development, agricultural runoff, and invasive species competition have led to dramatic population declines across much of its range. The species' sensitivity to water quality changes makes it particularly vulnerable to ongoing environmental pressures.

Threat summary

Habitat

Clear, shallow freshwater lakes, ponds, and slow-moving streams with sandy or muddy substrates, typically in oligotrophic to mesotrophic waters. The species grows submerged in depths of 0.5-3 meters, preferring areas with minimal disturbance and low nutrient levels.

FRESHWATER· majorTERRESTRIAL· majorFRESHWATER· major

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Smaller NajasCR

Smaller Najas

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Frequently asked questions

Why is Wavy Waternymph classified as Critically Endangered?
Wavy Waternymph is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Wavy Waternymph faces severe threats from habitat degradation due to water pollution, eutrophication, and sedimentation that degrade the clear, nutrient-poor waters it requires. Urban development, agricultural runoff, and invasive species competition have led to dramatic population declines across much of its range. The species' sensitivity to water quality changes makes it particularly vulnerable to ongoing environmental pressures.
Where does Wavy Waternymph live?
Wavy Waternymph 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 Wavy Waternymph?
The main threats to Wavy Waternymph 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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