Danube river snail vs Laysan Duck

Viviparus acerosus compared with Anas laysanensis

Key Differences

• Danube river snail is Least Concern while Laysan Duck is Critically Endangered.

Taxonomic Classification

Rank	Danube river snail	Laysan Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Aves (Birds)
Order	Architaenioglossa (Architaenioglossa)	Anseriformes (Anseriformes)
Family	Viviparidae	Anatidae
Genus	Viviparus	Anas
Species	Viviparus acerosus	Anas laysanensis

Evolutionary Relationship

Danube river snail and Laysan Duck share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Danube river snail

LC — Least Concern

Laysan Duck

CR — Critically Endangered

Physical Characteristics

Attribute	Danube river snail	Laysan Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Danube river snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, France, Germany, Netherlands, and United Kingdom.

Laysan Duck

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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

Laysan Duck

Laysan Duck (Anas laysanensis) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇫🇷 France 🇳🇱 Netherlands 🇬🇧 United Kingdom