Common Bithynia vs 八哥

Bithynia tentaculata compared with Acridotheres cristatellus

Taxonomic Classification

Rank	Common Bithynia	八哥
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Mollusca (软体动物门)	Chordata (脊索动物门)
Class	Gastropoda (腹足纲)	Aves (鳥綱)
Order	Littorinimorpha (滨螺形目)	Passeriformes (雀形目)
Family	Bithyniidae	Sturnidae
Genus	Bithynia	Acridotheres
Species	Bithynia tentaculata	Acridotheres cristatellus

Evolutionary Relationship

Common Bithynia and 八哥 share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Common Bithynia

LC — Least Concern

八哥

LC — Least Concern

Physical Characteristics

Attribute	Common Bithynia	八哥
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Bithynia

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

八哥

Habitat

Inhabits tropical and subtropical dry broadleaf forests and tropical and subtropical grasslands and savannas within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan, Singapore, United Arab Emirates), Europe (7 countries), and South America (Argentina, Bolivia).

Common Bithynia

The common bithynia (<em>Bithynia tentaculata</em>) is a freshwater gastropod snail belonging to the family Bithyniidae. It is classified as Least Concern on the IUCN Red List and has been recorded across terrestrial and aquatic habitats in Belgium, Denmark, Norway, Sweden, and the United States. <em>Bithynia tentaculata</em> typically inhabits slow-moving or still freshwater environments such as lakes, ponds, canals, and rivers, often on muddy or sandy substrates where organic material is abundant. The species has a distinctive operculum that seals the shell opening, providing protection against desiccation and predators. It typically feeds by grazing on algae, detritus, and biofilms on submerged surfaces. The common bithynia serves as an intermediate host for several trematode parasites, making it ecologically significant in freshwater food webs and parasite life cycles. Biological traits of this species remain poorly documented in the scientific literature.

八哥

凤头八哥（Acridotheres cristatellus）在IUCN红色名录中被列为无危（LC）物种。在其分布范围内广泛且数量丰富，种群稳定，无即时保育关切。

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway