brittlestar vs Polychaete

Amphiura filiformis compared with Pileolaria militaris

Key Differences

• brittlestar is Least Concern while Polychaete is Not Evaluated.

Taxonomic Classification

Rank	brittlestar	Polychaete
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Echinodermata (Echinoderms)	Annelida (Segmented Worms)
Class	Ophiuroidea (Ophiuroidea)	Polychaeta (Polychaeta)
Order	Amphilepidida (Amphilepidida)	Sabellida (Sabellida)
Family	Amphiuridae	Serpulidae
Genus	Amphiura	Pileolaria
Species	Amphiura filiformis	Pileolaria militaris

Evolutionary Relationship

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

Conservation Status

brittlestar

LC — Least Concern

Polychaete

NE — Not Evaluated

Physical Characteristics

Attribute	brittlestar	Polychaete
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brittlestar

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Polychaete

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (6 countries) and North America (United States).

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.

Shared Countries

Both species can be found in 1 countries:

🇸🇪 Sweden