Bigeye thresher vs Black-backed Forktail

Alopias pelagicus compared with Enicurus immaculatus

Key Differences

• Bigeye thresher is Endangered while Black-backed Forktail is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Black-backed Forktail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (Birds)
Order	Lamniformes (Mackerel Sharks)	Passeriformes (Songbirds)
Family	Alopiidae	Muscicapidae
Genus	Alopias	Enicurus
Species	Alopias pelagicus	Enicurus immaculatus

Evolutionary Relationship

Bigeye thresher and Black-backed Forktail share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Black-backed Forktail

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Black-backed Forktail
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.

Black-backed Forktail

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.

Black-backed Forktail

The Black-backed Forktail (Enicurus immaculatus) is a species in the genus Enicurus. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.