Bigeye thresher vs Gray smooth hound

Alopias pelagicus compared with Mustelus californicus

Key Differences

• Bigeye thresher is Endangered while Gray smooth hound is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Gray smooth hound
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Chondrichthyes (Cartilaginous Fish)	Chondrichthyes (Cartilaginous Fish)
Order	Lamniformes (Mackerel Sharks)	Carcharhiniformes (Ground Sharks)
Family	Alopiidae	Triakidae
Genus	Alopias	Mustelus
Species	Alopias pelagicus	Mustelus californicus

Evolutionary Relationship

Bigeye thresher and Gray smooth hound share a common ancestor at the Class level: Chondrichthyes. (Cartilaginous Fish)

Conservation Status

Bigeye thresher

EN — Endangered

Gray smooth hound

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Gray smooth hound
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.

Gray smooth hound

Habitat

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

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.