Capped Orb Mussel vs Japanese Weasel

Musculium lacustre compared with Mustela itatsi

Key Differences

• Capped Orb Mussel is Least Concern while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank	Capped Orb Mussel	Japanese Weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Mammalia (Mammals)
Order	Sphaeriida (Sphaeriida)	Carnivora (Carnivorans)
Family	Sphaeriidae	Mustelidae (Weasels & Otters)
Genus	Musculium	Mustela
Species	Musculium lacustre	Mustela itatsi

Evolutionary Relationship

Capped Orb Mussel and Japanese Weasel share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Capped Orb Mussel

LC — Least Concern

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute	Capped Orb Mussel	Japanese Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Capped Orb Mussel

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

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

Japanese Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Japan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Capped Orb Mussel

The Capped Orb Mussel (Musculium lacustre) is a species in the genus Musculium. It is currently classified as Least Concern (LC) on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.