CR

Fallicambarus hortoni

Unknown

Overview

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

Fallicambarus hortoni faces severe threats from habitat degradation and water quality decline in its limited range within the Appalachian region. Agricultural runoff, urban development, and sedimentation have significantly impacted the pristine stream conditions this crayfish requires. The species' extremely restricted distribution makes it particularly vulnerable to localized environmental changes, with entire populations at risk from single pollution events or habitat modifications.

Threat summary

Habitat

This crayfish inhabits clear, cool streams and springs in forested watersheds of the Appalachian Mountains, typically requiring well-oxygenated water with rocky substrates and minimal sedimentation. The species is endemic to a very limited geographic range, making it highly dependent on maintaining pristine aquatic conditions in its native headwater streams.

Artificial - Aquatic & marine· majorShrubland· majorWetlands (inland) - Permanent rivers/streams· major

Conservation measures underway

Species recovery

Frequently asked questions

Why is Fallicambarus hortoni classified as Critically Endangered?
Fallicambarus hortoni 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. Fallicambarus hortoni faces severe threats from habitat degradation and water quality decline in its limited range within the Appalachian region. Agricultural runoff, urban development, and sedimentation have significantly impacted the pristine stream conditions this crayfish requires. The species' extremely restricted distribution makes it particularly vulnerable to localized environmental changes, with entire populations at risk from single pollution events or habitat modifications.
Where does Fallicambarus hortoni live?
Fallicambarus hortoni 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 Fallicambarus hortoni?
The main threats to Fallicambarus hortoni are 2.1, 5.3, 9.3, and ai-1. The full IUCN-classified threat record for this species is detailed on the species page.

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