Atlantic Stream Crayfish vs common greasewort

Austropotamobius pallipes compared with Aneura pinguis

Key Differences

• Atlantic Stream Crayfish is Endangered while common greasewort is Least Concern.

Taxonomic Classification

Rank	Atlantic Stream Crayfish	common greasewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Marchantiophyta (liverwort)
Class	Malacostraca (Crustaceans)	Jungermanniopsida (Jungermanniopsida)
Order	Decapoda (Decapoda)	Metzgeriales (Metzgeriales)
Family	Astacidae	Aneuraceae
Genus	Austropotamobius	Aneura
Species	Austropotamobius pallipes	Aneura pinguis

Conservation Status

Atlantic Stream Crayfish

EN — Endangered

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Stream Crayfish	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Stream Crayfish

Habitat

Inhabits temperate broadleaf and mixed forests and temperate coniferous forests within the Palearctic biogeographic realm.

Range

Distributed across Ireland and United Kingdom. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

common greasewort

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (United States), and South America (Brazil, Colombia).

Atlantic Stream Crayfish

The Atlantic Stream Crayfish (Austropotamobius pallipes) is a species in the genus Austropotamobius. It is currently classified as Endangered on the IUCN Red List. Inhabits temperate broadleaf and mixed forests and temperate coniferous forests within the Palearctic biogeographic realm.

common greasewort

<em>Aneura pinguis</em>, commonly known as common greasewort, is a liverwort belonging to the genus Aneura within the family Aneuraceae. This cryptogamic plant inhabits ecosystems across Asia, Europe, and North America, thriving in moist or waterlogged environments. Its range encompasses Taiwan in Asia, six European countries, the United States in North America, and Brazil and Colombia in South America, indicating a broad geographic distribution across multiple continents. Common greasewort is assessed as Least Concern on the IUCN Red List. The species typically forms flat, ribbon-like thalli in damp habitats such as stream banks, wet rocks, and boggy ground. Biological traits of this species remain poorly documented in the scientific literature.