Bigeye thresher vs Black-bordered Piercer

Alopias pelagicus compared with Pammene argyrana

Key Differences

• Bigeye thresher is Endangered while Black-bordered Piercer is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Black-bordered Piercer
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	Tortricidae
Genus	Alopias	Pammene
Species	Alopias pelagicus	Pammene argyrana

Evolutionary Relationship

Bigeye thresher and Black-bordered Piercer share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

Black-bordered Piercer

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Black-bordered Piercer
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-bordered Piercer

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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-bordered Piercer

The Black-bordered Piercer (Pammene argyrana) is a species in the genus Pammene. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.