Black Nerite vs Red-billed Duck

Theodoxus prevostianus compared with Anas erythrorhyncha

Key Differences

• Black Nerite is Endangered while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Black Nerite	Red-billed Duck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Aves (Birds)
Order	Cycloneritida (Cycloneritida)	Anseriformes (Anseriformes)
Family	Neritidae	Anatidae
Genus	Theodoxus	Anas
Species	Theodoxus prevostianus	Anas erythrorhyncha

Evolutionary Relationship

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

Conservation Status

Black Nerite

EN — Endangered

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Black Nerite	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Nerite

Habitat

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

Range

Found in Norway. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Red-billed Duck

Habitat

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

Range

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

Black Nerite

The Black Nerite (Theodoxus prevostianus) is a species in the genus Theodoxus. It is currently classified as Endangered on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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 1 countries:

🇳🇴 Norway