Common Seahorse vs Harmless Serotine

Hippocampus kuda compared with Eptesicus innoxius

Key Differences

• Common Seahorse is Vulnerable while Harmless Serotine is Near Threatened.

Taxonomic Classification

Rank	Common Seahorse	Harmless Serotine
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)	Mammalia (哺乳類)
Order	Perciformes (ペルカ目)	Chiroptera (翼手目)
Family	Pomacentridae (Clownfish & Damselfish)	Vespertilionidae
Genus	Amphiprion (Clownfish)	Eptesicus
Species	Hippocampus kuda	Eptesicus innoxius

Evolutionary Relationship

Common Seahorse and Harmless Serotine share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Harmless Serotine

NT — Near Threatened

Physical Characteristics

Attribute	Common Seahorse	Harmless Serotine
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.

Harmless Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. 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。