Black Nerite vs California alder

Theodoxus prevostianus compared with Alnus rhombifolia

Key Differences

• Black Nerite is Endangered while California alder is Least Concern.

Taxonomic Classification

Rank	Black Nerite	California alder
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Magnoliophyta (Flowering Plants)
Class	Gastropoda (Gastropoda)	Magnoliopsida (Dicots)
Order	Cycloneritida (Cycloneritida)	Fagales (Beeches & Oaks)
Family	Neritidae	Betulaceae
Genus	Theodoxus	Alnus
Species	Theodoxus prevostianus	Alnus rhombifolia

Conservation Status

Black Nerite

EN — Endangered

California alder

LC — Least Concern

Physical Characteristics

Attribute	Black Nerite	California alder
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.

California alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found in Canada.

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.

California alder

The California alder (Alnus rhombifolia) is a species in the genus Alnus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.