Common Seahorse vs Variable flatsedge

Hippocampus kuda compared with Cyperus difformis

Key Differences

• Common Seahorse is Vulnerable while Variable flatsedge is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	Variable flatsedge
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Magnoliophyta (被子植物門)
Class	Actinopterygii (Ray-finned Fish)	Liliopsida (単子葉植物綱)
Order	Perciformes (ペルカ目)	Poales (イネ目)
Family	Pomacentridae (Clownfish & Damselfish)	Cyperaceae
Genus	Amphiprion (Clownfish)	Cyperus
Species	Hippocampus kuda	Cyperus difformis

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Variable flatsedge

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	Variable flatsedge
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.

Variable flatsedge

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical coniferous forests, among 6 distinct biome types spanning the Indomalayan and Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (9 countries), Asia (10 countries), Europe (9 countries), North America (6 countries), Oceania and the Pacific (5 countries), and South America (6 countries).

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。

Shared Countries

Both species can be found in 2 countries:

🇮🇳 India 🇮🇩 Indonesia