brown point snail vs Common Bithynia

Acicula fusca compared with Bithynia tentaculata

Key Differences

• brown point snail is Extinct while Common Bithynia is Least Concern.

Taxonomic Classification

Rank	brown point snail	Common Bithynia
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Mollusca (mollusques)	Mollusca (mollusques)
Class same	Gastropoda (Gastropoda)	Gastropoda (Gastropoda)
Order	Architaenioglossa (Architaenioglossa)	Littorinimorpha (Littorinimorpha)
Family	Aciculidae	Bithyniidae
Genus	Acicula	Bithynia
Species	Acicula fusca	Bithynia tentaculata

Evolutionary Relationship

brown point snail and Common Bithynia share a common ancestor at the Class level: Gastropoda. (Gastropoda)

Conservation Status

brown point snail

EX — Extinct

Common Bithynia

LC — Least Concern

Physical Characteristics

Attribute	brown point snail	Common Bithynia
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brown point snail

Habitat

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

Range

Distributed across Belgium and Norway.

Common Bithynia

Habitat

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

Range

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

brown point snail

The Brown Point Snail (Acicula fusca) is a species in the genus Acicula. It is currently classified as Extinct on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway