Bigeye thresher vs Round-winged Drill

Alopias pelagicus compared with Dichrorampha simpliciana

Key Differences

• Bigeye thresher is Endangered while Round-winged Drill is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Round-winged Drill
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	Dichrorampha
Species	Alopias pelagicus	Dichrorampha simpliciana

Evolutionary Relationship

Bigeye thresher and Round-winged Drill share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

Round-winged Drill

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Round-winged Drill
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.

Round-winged Drill

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.