American bison vs common freshwater nerite

Bison bison compared with Theodoxus fluviatilis

Key Differences

• American bison is Not Evaluated while common freshwater nerite is Least Concern.

Taxonomic Classification

Rank	American bison	common freshwater nerite
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Artiodactyla (Even-toed Ungulates)	Cycloneritida (Cycloneritida)
Family	Bovidae (Bovids)	Neritidae
Genus	Bison	Theodoxus
Species	Bison bison	Theodoxus fluviatilis

Evolutionary Relationship

American bison and common freshwater nerite share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

American bison

NE — Not Evaluated

common freshwater nerite

LC — Least Concern

Physical Characteristics

Attribute	American bison	common freshwater nerite
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

American bison

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Colombia).

common freshwater nerite

Habitat

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

Range

Found across Europe (11 countries).

American bison

The American bison (Bison bison) is a species in the genus Bison. Typically found in diverse terrestrial and aquatic ecosystems.

common freshwater nerite

<em>Theodoxus fluviatilis</em>, commonly known as the common freshwater nerite, is a small aquatic gastropod mollusc belonging to the family Neritidae. This species is widely distributed across Europe, with documented occurrences in Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Hungary, Latvia, Norway, and Sweden. It typically inhabits freshwater environments, including rivers, streams, and lakes, where it grazes on algae and biofilm on hard substrates such as rocks and submerged wood. The common freshwater nerite is assessed as Least Concern on conservation metrics, reflecting its broad distribution and relatively stable populations across much of its European range. Biological traits of this species remain poorly documented in the scientific literature. <em>Theodoxus fluviatilis</em> plays an ecological role as a grazer in freshwater benthic communities, contributing to the regulation of algal growth on hard surfaces. The species typically favors clean, well-oxygenated waters and can serve as an indicator of water quality in freshwater systems. Its distinctive small, dome-shaped shell with variable patterning makes it recognizable among freshwater invertebrates.

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇵🇱 Poland 🇸🇪 Sweden