brittlestar vs squirrel’s tail hydroid

Amphiura filiformis compared with Sertularia argentea

Key Differences

• brittlestar is Least Concern while squirrel’s tail hydroid is Not Evaluated.

Taxonomic Classification

Rank	brittlestar	squirrel’s tail hydroid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Echinodermata (Echinoderms)	Cnidaria (Cnidarians)
Class	Ophiuroidea (Ophiuroidea)	Hydrozoa (Hydrozoa)
Order	Amphilepidida (Amphilepidida)	Leptothecata (Leptothecata)
Family	Amphiuridae	Sertulariidae
Genus	Amphiura	Sertularia
Species	Amphiura filiformis	Sertularia argentea

Evolutionary Relationship

brittlestar and squirrel’s tail hydroid share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

brittlestar

LC — Least Concern

squirrel’s tail hydroid

NE — Not Evaluated

Physical Characteristics

Attribute	brittlestar	squirrel’s tail hydroid
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.

squirrel’s tail hydroid

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

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 2 countries:

🇳🇴 Norway 🇸🇪 Sweden