nut fingernailclam vs Red-billed Duck

Sphaerium rivicola compared with Anas erythrorhyncha

Key Differences

• nut fingernailclam is Not Evaluated while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	nut fingernailclam	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Aves (Birds)
Order	Sphaeriida (Sphaeriida)	Anseriformes (Anseriformes)
Family	Sphaeriidae	Anatidae
Genus	Sphaerium	Anas
Species	Sphaerium rivicola	Anas erythrorhyncha

Evolutionary Relationship

nut fingernailclam and Red-billed Duck share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

nut fingernailclam

NE — Not Evaluated

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	nut fingernailclam	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

nut fingernailclam

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Ukraine.

Red-billed Duck

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (6 countries) and South America (Ecuador).

Red-billed Duck

Red-billed Duck (Anas erythrorhyncha) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway