Common Seahorse vs Devil weed

Hippocampus kuda compared with Sargassum horneri

Key Differences

• Common Seahorse is Vulnerable while Devil weed is Not Evaluated.

Taxonomic Classification

Rank	Common Seahorse	Devil weed
Kingdom	Animalia (動物)	Chromista (クロミスタ)
Phylum	Chordata (脊索動物)	Ochrophyta (オクロ植物)
Class	Actinopterygii (Ray-finned Fish)	Phaeophyceae (褐藻)
Order	Perciformes (ペルカ目)	Fucales (Fucales)
Family	Pomacentridae (Clownfish & Damselfish)	Sargassaceae
Genus	Amphiprion (Clownfish)	Sargassum
Species	Hippocampus kuda	Sargassum horneri

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Devil weed

NE — Not Evaluated

Physical Characteristics

Attribute	Common Seahorse	Devil weed
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.

Devil weed

Habitat

Native to Asia and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Mexico, Taiwan, and United States.

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。