Bigeye thresher vs Highfin dogfish

Alopias pelagicus compared with Centroscyllium excelsum

Key Differences

• Bigeye thresher is Endangered while Highfin dogfish is Near Threatened.

Taxonomic Classification

Rank	Bigeye thresher	Highfin dogfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Elasmobranchii
Order	Lamniformes (Mackerel Sharks)	Squaliformes (Squaliformes)
Family	Alopiidae	Etmopteridae
Genus	Alopias	Centroscyllium
Species	Alopias pelagicus	Centroscyllium excelsum

Evolutionary Relationship

Bigeye thresher and Highfin dogfish share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Highfin dogfish

NT — Near Threatened

Physical Characteristics

Attribute	Bigeye thresher	Highfin dogfish
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bigeye thresher

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.

Highfin dogfish

Bigeye thresher

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.