Chalarm hang-daab vs Flat Periwinkle

Alopias pelagicus compared with Littorina obtusata

Key Differences

• Chalarm hang-daab is Endangered while Flat Periwinkle is Least Concern.

Taxonomic Classification

Rank	Chalarm hang-daab	Flat Periwinkle
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Mollusca (มอลลัสกา)
Class	Chondrichthyes (ปลากระดูกอ่อน)	Gastropoda (ชั้นแกสโทรโพดา)
Order	Lamniformes (อันดับปลาฉลามขาว)	Littorinimorpha (Littorinimorpha)
Family	Alopiidae	Littorinidae
Genus	Alopias	Littorina
Species	Alopias pelagicus	Littorina obtusata

Evolutionary Relationship

Chalarm hang-daab and Flat Periwinkle share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Chalarm hang-daab

EN — Endangered

Flat Periwinkle

LC — Least Concern

Physical Characteristics

Attribute	Chalarm hang-daab	Flat Periwinkle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Flat Periwinkle

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.