Bigeye thresher vs flat-backed millipede

Alopias pelagicus compared with Polydesmus complanatus

Key Differences

• Bigeye thresher is Endangered while flat-backed millipede is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	flat-backed millipede
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Chondrichthyes (Cartilaginous Fish)	Diplopoda (Diplopoda)
Order	Lamniformes (Mackerel Sharks)	Polydesmida (Polydesmida)
Family	Alopiidae	Polydesmidae
Genus	Alopias	Polydesmus
Species	Alopias pelagicus	Polydesmus complanatus

Evolutionary Relationship

Bigeye thresher and flat-backed millipede share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

flat-backed millipede

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	flat-backed millipede
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.

flat-backed millipede

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across 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.