Bigeye thresher vs Marbled catshark

Alopias pelagicus compared with Hemiscyllium trispeculare

Key Differences

• Bigeye thresher is Endangered while Marbled catshark is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Marbled catshark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Elasmobranchii
Order	Lamniformes (Mackerel Sharks)	Orectolobiformes (Orectolobiformes)
Family	Alopiidae	Hemiscylliidae
Genus	Alopias	Hemiscyllium
Species	Alopias pelagicus	Hemiscyllium trispeculare

Evolutionary Relationship

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

Conservation Status

Bigeye thresher

EN — Endangered

Marbled catshark

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Marbled catshark
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.

Marbled catshark

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.