Common Seahorse vs robust shell

Hippocampus kuda compared with Littoraria undulata

Key Differences

• Common Seahorse is Vulnerable while robust shell is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	robust shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Actinopterygii (Ray-finned Fish)	Gastropoda (Gastropoda)
Order	Perciformes (Perch-like Fish)	Littorinimorpha (Littorinimorpha)
Family	Pomacentridae (Clownfish & Damselfish)	Littorinidae
Genus	Amphiprion (Clownfish)	Littoraria
Species	Hippocampus kuda	Littoraria undulata

Evolutionary Relationship

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

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

robust shell

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

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.

robust shell

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found in Taiwan.

Common Seahorse

The common seahorse is found in tropical and temperate waters. Males carry and deliver the babies.