Black Nerite vs Waser

Theodoxus prevostianus compared with Alstonia scholaris

Key Differences

• Black Nerite is Endangered while Waser is Least Concern.

Taxonomic Classification

Rank	Black Nerite	Waser
Kingdom	Animalia (hewan)	Plantae (tumbuhan)
Phylum	Mollusca (Moluska)	Magnoliophyta (Flowering Plants)
Class	Gastropoda (siput)	Magnoliopsida (Dicots)
Order	Cycloneritida (Cycloneritida)	Gentianales (Gentianales)
Family	Neritidae	Apocynaceae
Genus	Theodoxus	Alstonia
Species	Theodoxus prevostianus	Alstonia scholaris

Conservation Status

Black Nerite

EN — Endangered

Waser

LC — Least Concern

Physical Characteristics

Attribute	Black Nerite	Waser
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.

Waser

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.

Range

Distributed across Micronesia, Taiwan, and United States.

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.

Waser

The Blackboard Tree (Alstonia scholaris) is a species in the genus Alstonia. It is currently classified as Least Concern on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.