Bigeye thresher vs Cuckoo ray

Alopias pelagicus compared with Leucoraja circularis

Key Differences

• Bigeye thresher is Endangered while Cuckoo ray is Not Evaluated.

Taxonomic Classification

Rank	Bigeye thresher	Cuckoo ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Elasmobranchii
Order	Lamniformes (Mackerel Sharks)	Rajiformes (Rajiformes)
Family	Alopiidae	Rajidae
Genus	Alopias	Leucoraja
Species	Alopias pelagicus	Leucoraja circularis

Evolutionary Relationship

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

Conservation Status

Bigeye thresher

EN — Endangered

Cuckoo ray

NE — Not Evaluated

Physical Characteristics

Attribute	Bigeye thresher	Cuckoo ray
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.

Cuckoo ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark and Norway.

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.