arrow-finned squid vs Bigeye thresher

Illex oxygonius compared with Alopias pelagicus

Key Differences

• arrow-finned squid is Least Concern while Bigeye thresher is Endangered.

Taxonomic Classification

Rank	arrow-finned squid	Bigeye thresher
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Cephalopoda (Cephalopods)	Chondrichthyes (Cartilaginous Fish)
Order	Oegopsida (Oegopsida)	Lamniformes (Mackerel Sharks)
Family	Ommastrephidae	Alopiidae
Genus	Illex	Alopias
Species	Illex oxygonius	Alopias pelagicus

Evolutionary Relationship

arrow-finned squid and Bigeye thresher share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

arrow-finned squid

LC — Least Concern

Bigeye thresher

EN — Endangered

Physical Characteristics

Attribute	arrow-finned squid	Bigeye thresher
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

arrow-finned squid

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.

arrow-finned squid

The Arrow-finned squid, Illex oxygonius, is a species. It is currently assessed as least concern on the IUCN Red List.

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.