Bigeye thresher vs Oakleaf Cyanea

Alopias pelagicus compared with Cyanea quercifolia

Key Differences

• Bigeye thresher is Endangered while Oakleaf Cyanea is Extinct.

Taxonomic Classification

Rank	Bigeye thresher	Oakleaf Cyanea
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Cnidaria (Cnidarians)
Class	Chondrichthyes (Cartilaginous Fish)	Scyphozoa (Scyphozoa)
Order	Lamniformes (Mackerel Sharks)	Semaeostomeae (Semaeostomeae)
Family	Alopiidae	Cyaneidae
Genus	Alopias	Cyanea
Species	Alopias pelagicus	Cyanea quercifolia

Evolutionary Relationship

Bigeye thresher and Oakleaf Cyanea share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

Oakleaf Cyanea

EX — Extinct

Physical Characteristics

Attribute	Bigeye thresher	Oakleaf Cyanea
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.

Oakleaf Cyanea

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.