Bordered Scale Lichen vs European otter

Psora pseudorussellii compared with Lutra lutra

Key Differences

Bordered Scale Lichen is Not Evaluated while European otter is Vulnerable.

Taxonomic Classification

Rank	Bordered Scale Lichen	European otter
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (Mammals)
Order	Lecanorales (Lecanorales)	Carnivora (Carnivorans)
Family	Psoraceae	Mustelidae (Weasels & Otters)
Genus	Psora	Lutra (Otters)
Species	Psora pseudorussellii	Lutra lutra

Conservation Status

Bordered Scale Lichen

NE — Not Evaluated

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Bordered Scale Lichen	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Bordered Scale Lichen

Habitat

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

Range

Distributed across Norway and United States.

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Bordered Scale Lichen

The Bordered Scale Lichen (Psora pseudorussellii) is a species in the genus Psora. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.