CR

Procambarus paradoxus

Unknown

Overview

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

Procambarus paradoxus faces severe threats from groundwater depletion and contamination in its extremely limited range in Florida's karst aquifer systems. Urban development and agricultural intensification have altered surface hydrology, reducing groundwater recharge and introducing pollutants into the cave systems where this crayfish lives. The species' obligate cave-dwelling nature makes it particularly vulnerable to water quality changes, as contaminated groundwater can rapidly affect entire populations with no escape routes available.

Threat summary

Habitat

This obligate cave-dwelling crayfish inhabits flooded limestone caves and underground aquifer systems in north-central Florida's karst landscape. It requires pristine groundwater conditions with stable temperatures and specific water chemistry found only in deep cave environments connected to the Floridan Aquifer system.

Wetlands (inland) - Permanent rivers/streams· major

Conservation measures underway

Species recovery

Other threatened species in CAMBARIDAE

VU

Crescent Crayfish

Orconectes taylori

Unknown
CR

Cambarellus prolixus

Unknown
CR

Cambarellus areolatus

Unknown
CR

Procambarus catemacoensis

Unknown

Threatened in Canada

VU

Lepiota echinella

Unknown
EN

Nymphaea loriana

Declining
EN

Lake Lamprey

Entosphenus macrostoma

Unknown
VU

Paddlefish

Polyodon spathula

Unknown

Frequently asked questions

Why is Procambarus paradoxus classified as Critically Endangered?
Procambarus paradoxus 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. Procambarus paradoxus faces severe threats from groundwater depletion and contamination in its extremely limited range in Florida's karst aquifer systems. Urban development and agricultural intensification have altered surface hydrology, reducing groundwater recharge and introducing pollutants into the cave systems where this crayfish lives. The species' obligate cave-dwelling nature makes it particularly vulnerable to water quality changes, as contaminated groundwater can rapidly affect entire populations with no escape routes available.
Where does Procambarus paradoxus live?
Procambarus paradoxus occurs in Canada, and Mexico. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Procambarus paradoxus?
The main threats to Procambarus paradoxus are 1.1, 9.3.4, ai-1, and ai-2. The full IUCN-classified threat record for this species is detailed on the species page.

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