Alpine Bladder-fern vs Chalarm hang-daab

Cystopteris alpina compared with Alopias pelagicus

Key Differences

• Alpine Bladder-fern is Near Threatened while Chalarm hang-daab is Endangered.

Taxonomic Classification

Rank	Alpine Bladder-fern	Chalarm hang-daab
Kingdom	Plantae (พืช)	Animalia (สัตว์)
Phylum	Tracheophyta	Chordata (สัตว์มีแกนสันหลัง)
Class	Polypodiopsida (Polypodiopsida)	Chondrichthyes (ปลากระดูกอ่อน)
Order	Polypodiales (Polypodiales)	Lamniformes (อันดับปลาฉลามขาว)
Family	Cystopteridaceae	Alopiidae
Genus	Cystopteris	Alopias
Species	Cystopteris alpina	Alopias pelagicus

Conservation Status

Alpine Bladder-fern

NT — Near Threatened

Chalarm hang-daab

EN — Endangered

Physical Characteristics

Attribute	Alpine Bladder-fern	Chalarm hang-daab
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alpine Bladder-fern

Habitat

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

Range

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

Chalarm hang-daab

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Distributed across Colombia and Taiwan. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Alpine Bladder-fern

The Alpine Bladder-fern (Cystopteris alpina) is a species in the genus Cystopteris. It is currently classified as Near Threatened on the IUCN Red List. Typically found in moist, shaded forest floors and tropical canopies. Distributed across Norway and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Chalarm hang-daab

The Bigeye thresher (Alopias pelagicus) is a species in the genus Alopias. It is currently classified as Endangered on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.