Bladder Fern vs Japanese Weasel

Cystopteris fragilis compared with Mustela itatsi

Key Differences

• Bladder Fern is Not Evaluated while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank	Bladder Fern	Japanese Weasel
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (Chordates)
Class	Polypodiopsida (Polypodiopsida)	Mammalia (Mammals)
Order	Polypodiales (Polypodiales)	Carnivora (Carnivorans)
Family	Cystopteridaceae	Mustelidae (Weasels & Otters)
Genus	Cystopteris	Mustela
Species	Cystopteris fragilis	Mustela itatsi

Conservation Status

Bladder Fern

NE — Not Evaluated

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute	Bladder Fern	Japanese Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bladder Fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (Canada, United States), and South America (Colombia).

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.

Bladder Fern

The Bladder Fern (Cystopteris fragilis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.