Common Seahorse vs One-Glumed Spike-Rush

Hippocampus kuda compared with Eleocharis uniglumis

Key Differences

• Common Seahorse is Vulnerable while One-Glumed Spike-Rush is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	One-Glumed Spike-Rush
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Actinopterygii (Ray-finned Fish)	Liliopsida (Monocots)
Order	Perciformes (Perch-like Fish)	Poales (Grasses)
Family	Pomacentridae (Clownfish & Damselfish)	Cyperaceae
Genus	Amphiprion (Clownfish)	Eleocharis
Species	Hippocampus kuda	Eleocharis uniglumis

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

One-Glumed Spike-Rush

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	One-Glumed Spike-Rush
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.

One-Glumed Spike-Rush

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Found across Europe (7 countries) and North America (Canada).

Common Seahorse

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