Bitter Tooth vs common bubble snail

Hydnellum scabrosum compared with Akera bullata

Key Differences

• Bitter Tooth is Near Threatened while common bubble snail is Least Concern.

Taxonomic Classification

Rank	Bitter Tooth	common bubble snail
Kingdom	Fungi (nấm)	Animalia (động vật)
Phylum	Basidiomycota (Club Fungi)	Mollusca (động vật thân mềm)
Class	Agaricomycetes (Mushrooms)	Gastropoda (Lớp Chân bụng)
Order	Thelephorales (Thelephorales)	Aplysiida (Aplysiida)
Family	Bankeraceae	Akeridae
Genus	Hydnellum	Akera
Species	Hydnellum scabrosum	Akera bullata

Conservation Status

Bitter Tooth

NT — Near Threatened

common bubble snail

LC — Least Concern

Physical Characteristics

Attribute	Bitter Tooth	common bubble snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bitter Tooth

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Denmark, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

common bubble snail

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Bitter Tooth

The Bitter Tooth (Hydnellum scabrosum) is a species in the genus Hydnellum. It is currently classified as Near Threatened on the IUCN Red List. Typically found in forest floors, decomposing wood, and soil ecosystems.

common bubble snail

The common bubble snail (<em>Akera bullata</em>) is a marine gastropod mollusc found in the coastal waters of Denmark, Norway, Portugal, and Sweden. This species typically inhabits terrestrial and aquatic environments including forests and freshwater-adjacent marine areas, often occurring in shallow subtidal and intertidal zones of temperate European seas. It is classified as Least Concern on the IUCN Red List. As a member of the family Akeridae, the common bubble snail is characterized by its thin, fragile shell and its ability to swim briefly by flapping its large, wing-like parapodia. The species often forages on algae and detritus in sandy and muddy seafloor habitats, particularly in sheltered bays and estuaries. The common bubble snail typically aggregates in large numbers during the spawning season, producing gelatinous egg masses. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden