Bigeye thresher vs Green-Underside Blue

Alopias pelagicus compared with Glaucopsyche alexis

Key Differences

• Bigeye thresher is Endangered while Green-Underside Blue is Near Threatened.

Taxonomic Classification

Rank	Bigeye thresher	Green-Underside Blue
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Chondrichthyes (Cartilaginous Fish)	Insecta (Insects)
Order	Lamniformes (Mackerel Sharks)	Lepidoptera (Butterflies & Moths)
Family	Alopiidae	Lycaenidae
Genus	Alopias	Glaucopsyche
Species	Alopias pelagicus	Glaucopsyche alexis

Evolutionary Relationship

Bigeye thresher and Green-Underside Blue share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

Green-Underside Blue

NT — Near Threatened

Physical Characteristics

Attribute	Bigeye thresher	Green-Underside Blue
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.

Green-Underside Blue

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (37 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.