Bigeye thresher vs Guam Flying Fox

Alopias pelagicus compared with Pteropus tokudae

Key Differences

• Bigeye thresher is Endangered while Guam Flying Fox is Extinct.

Taxonomic Classification

Rank	Bigeye thresher	Guam Flying Fox
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Lamniformes (Mackerel Sharks)	Chiroptera (Bats)
Family	Alopiidae	Pteropodidae (Fruit Bats)
Genus	Alopias	Pteropus (Flying Foxes)
Species	Alopias pelagicus	Pteropus tokudae

Evolutionary Relationship

Bigeye thresher and Guam Flying Fox share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Guam Flying Fox

EX — Extinct

Physical Characteristics

Attribute	Bigeye thresher	Guam Flying Fox
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.

Guam Flying Fox

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.