Bigeye thresher vs Gray-headed Fish-Eagle

Alopias pelagicus compared with Haliaeetus ichthyaetus

Key Differences

• Bigeye thresher is Endangered while Gray-headed Fish-Eagle is Not Evaluated.

Taxonomic Classification

Rank	Bigeye thresher	Gray-headed Fish-Eagle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (Birds)
Order	Lamniformes (Mackerel Sharks)	Accipitriformes (Hawks & Eagles)
Family	Alopiidae	Accipitridae (Hawks & Eagles)
Genus	Alopias	Haliaeetus (Sea Eagles)
Species	Alopias pelagicus	Haliaeetus ichthyaetus

Evolutionary Relationship

Bigeye thresher and Gray-headed Fish-Eagle share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Gray-headed Fish-Eagle

NE — Not Evaluated

Physical Characteristics

Attribute	Bigeye thresher	Gray-headed Fish-Eagle
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-headed Fish-Eagle

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in 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.