VUVulnerable

Dense Hydrobe

Aphaostracon pycnum

The dense hydrobe, scientific name Aphaostracon pycnum, is a species of small freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Cochliopidae.

1

Countries

01Classification

Taxonomy & Classification

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Littorinimorpha

Family

Cochliopidae

Genus

Aphaostracon

Dense Hydrobe belongs to the family Cochliopidae, order Littorinimorpha, within the Gastropoda class.

02Description

Species Profile

The dense hydrobe, scientific name Aphaostracon pycnum, is a species of small freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Cochliopidae.

Dense Hydrobe faces significant threats from habitat degradation and water pollution in its freshwater environments. Urban development and agricultural runoff have contaminated many of the clean, well-oxygenated waters this species requires for survival. Climate change is also altering water temperatures and flow patterns in its native range.

Key Facts

IUCN StatusVulnerable (VU)
GroupMolluscs
03Habitat

Habitat & Distribution

Dense Hydrobe inhabits clean, well-oxygenated freshwater springs, seeps, and small streams, typically in limestone karst regions. This species requires stable water temperatures and high water quality, often found in areas with consistent groundwater discharge.

FRESHWATERMajor
04Threats

Threats

Urban development and habitat fragmentation

HighOngoing

Water pollution from agricultural runoff

HighOngoing

Climate change affecting water temperature and flow

MediumOngoing

Sedimentation from land use changes

MediumOngoing

Collection pressure for scientific specimens

LowOngoing
06Range

Found in 1 Country

Community

Community Sightings

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07Sources

Sources & Attribution

How to Cite

IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS

GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org

This page: SpeciesRadar (2025). Dense Hydrobe (Aphaostracon pycnum). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/dense-hydrobe

Full citation guide & data usage terms