Common Seahorse vs Amerika-aka-ei

Hippocampus kuda compared with Hypanus americanus

Key Differences

• Common Seahorse is Vulnerable while Amerika-aka-ei is Near Threatened.

Taxonomic Classification

Rank	Common Seahorse	Amerika-aka-ei
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Actinopterygii (Ray-finned Fish)	Elasmobranchii
Order	Perciformes (ペルカ目)	Myliobatiformes (トビエイ目)
Family	Pomacentridae (Clownfish & Damselfish)	Dasyatidae
Genus	Amphiprion (Clownfish)	Hypanus
Species	Hippocampus kuda	Hypanus americanus

Evolutionary Relationship

Common Seahorse and Amerika-aka-ei share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Amerika-aka-ei

NT — Near Threatened

Physical Characteristics

Attribute	Common Seahorse	Amerika-aka-ei
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.

Amerika-aka-ei

Habitat

Native to South America, inhabiting ecosystems characteristic of the region.

Range

Found in Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Common Seahorse

タツノオトシゴ（Hippocampus kuda）は熱帯および温帯の海域に分布する。オスが子を育てて出産するという独特な繁殖形態で知られる。