Arrowhead dogfish vs Big eye thresher shark

Deania profundorum compared with Alopias superciliosus

Key Differences

• Arrowhead dogfish is Near Threatened while Big eye thresher shark is Vulnerable.

Taxonomic Classification

Rank	Arrowhead dogfish	Big eye thresher shark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Chondrichthyes (Cartilaginous Fish)
Order	Squaliformes (Squaliformes)	Lamniformes (Mackerel Sharks)
Family	Centrophoridae	Alopiidae
Genus	Deania	Alopias
Species	Deania profundorum	Alopias superciliosus

Evolutionary Relationship

Arrowhead dogfish and Big eye thresher shark share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Arrowhead dogfish

NT — Near Threatened

Big eye thresher shark

VU — Vulnerable

Physical Characteristics

Attribute	Arrowhead dogfish	Big eye thresher shark
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arrowhead dogfish

Habitat

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

Range

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

Big eye thresher shark

Habitat

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

Range

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

Arrowhead dogfish

The Arrowhead dogfish, Deania profundorum, is a species. It is currently assessed as near threatened on the IUCN Red List. Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Big eye thresher shark

The Big eye thresher shark (Alopias superciliosus) is a species in the genus Alopias. It is currently classified as Vulnerable on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Shared Countries

Both species can be found in 2 countries:

🇵🇹 Portugal 🇹🇼 Taiwan