Bigeye thresher vs brittlestar

Alopias pelagicus compared with Amphiura filiformis

Key Differences

• Bigeye thresher is Endangered while brittlestar is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	brittlestar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Echinodermata (Echinoderms)
Class	Chondrichthyes (Cartilaginous Fish)	Ophiuroidea (Ophiuroidea)
Order	Lamniformes (Mackerel Sharks)	Amphilepidida (Amphilepidida)
Family	Alopiidae	Amphiuridae
Genus	Alopias	Amphiura
Species	Alopias pelagicus	Amphiura filiformis

Evolutionary Relationship

Bigeye thresher and brittlestar share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

brittlestar

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	brittlestar
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.

brittlestar

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.

brittlestar

The Brittlestar (Amphiura filiformis) is a species in the genus Amphiura. It is currently classified as Least Concern on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.