Common Seahorse vs flat periwinkle

Hippocampus kuda compared with Littorina fabalis

Key Differences

• Common Seahorse is Vulnerable while flat periwinkle is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	flat periwinkle
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)	Littorina
Species	Hippocampus kuda	Littorina fabalis

Evolutionary Relationship

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

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

flat periwinkle

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	flat periwinkle
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.

flat periwinkle

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Common Seahorse

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