Common Seahorse vs Rough Stonewort

Hippocampus kuda compared with Chara aspera

Key Differences

Common Seahorse is Vulnerable while Rough Stonewort is Near Threatened.

Taxonomic Classification

Rank	Common Seahorse	Rough Stonewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Charophyta (Charophyta)
Class	Actinopterygii (Ray-finned Fish)	Charophyceae (Charophyceae)
Order	Perciformes (Perch-like Fish)	Charales (Charales)
Family	Pomacentridae (Clownfish & Damselfish)	Characeae
Genus	Amphiprion (Clownfish)	Chara
Species	Hippocampus kuda	Chara aspera

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Rough Stonewort

NT — Near Threatened

Physical Characteristics

Attribute	Common Seahorse	Rough Stonewort
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.

Rough Stonewort

Habitat

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

Range

Distributed across Denmark, Norway, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.