brittlestar vs Common Seahorse

Amphiura filiformis compared with Hippocampus kuda

Key Differences

brittlestar is Least Concern while Common Seahorse is Vulnerable.

Taxonomic Classification

Rank	brittlestar	Common Seahorse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Echinodermata (Echinoderms)	Chordata (Chordates)
Class	Ophiuroidea (Ophiuroidea)	Actinopterygii (Ray-finned Fish)
Order	Amphilepidida (Amphilepidida)	Perciformes (Perch-like Fish)
Family	Amphiuridae	Pomacentridae (Clownfish & Damselfish)
Genus	Amphiura	Amphiprion (Clownfish)
Species	Amphiura filiformis	Hippocampus kuda

Evolutionary Relationship

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

View Kingdom: Animalia

Conservation Status

brittlestar

LC — Least Concern

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Physical Characteristics

Attribute	brittlestar	Common Seahorse
Diet	—	Carnivore
Average Lifespan	—	5 years
Average Length	—	17 cm
Average Weight	—	10 g

Habitat & Geographic Range

brittlestar

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Common Seahorse

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 7 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Australia, India, Indonesia, Japan, and Philippines. Currently classified as Vulnerable 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.