Common Seahorse vs Rootless Duckweed

Hippocampus kuda compared with Wolffia arrhiza

Key Differences

• Common Seahorse is Vulnerable while Rootless Duckweed is Endangered.

Taxonomic Classification

Rank	Common Seahorse	Rootless Duckweed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Actinopterygii (Ray-finned Fish)	Liliopsida (Monocots)
Order	Perciformes (Perch-like Fish)	Alismatales (Alismatales)
Family	Pomacentridae (Clownfish & Damselfish)	Araceae
Genus	Amphiprion (Clownfish)	Wolffia
Species	Hippocampus kuda	Wolffia arrhiza

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Rootless Duckweed

EN — Endangered

Physical Characteristics

Attribute	Common Seahorse	Rootless Duckweed
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.

Rootless Duckweed

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests, among 4 distinct biome types spanning the Indomalayan and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan), Europe (10 countries), North America (Canada), and South America (Brazil). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Seahorse

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

Shared Countries

Both species can be found in 1 countries:

🇯🇵 Japan