brittlestar vs Crested Shelduck

Amphiura filiformis compared with Tadorna cristata

Key Differences

• brittlestar is Least Concern while Crested Shelduck is Critically Endangered.

Taxonomic Classification

Rank	brittlestar	Crested Shelduck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Echinodermata (Echinoderms)	Chordata (Chordates)
Class	Ophiuroidea (Ophiuroidea)	Aves (Birds)
Order	Amphilepidida (Amphilepidida)	Anseriformes (Anseriformes)
Family	Amphiuridae	Anatidae
Genus	Amphiura	Tadorna
Species	Amphiura filiformis	Tadorna cristata

Evolutionary Relationship

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

Conservation Status

brittlestar

LC — Least Concern

Crested Shelduck

CR — Critically Endangered

Physical Characteristics

Attribute	brittlestar	Crested Shelduck
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.

Crested Shelduck

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Norway. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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:

🇳🇴 Norway