Common Seahorse vs Greater Pencil-tailed Tree Mouse

Hippocampus kuda compared with Chiropodomys major

Key Differences

• Common Seahorse is Vulnerable while Greater Pencil-tailed Tree Mouse is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	Greater Pencil-tailed Tree Mouse
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Actinopterygii (Ray-finned Fish)	Mammalia (哺乳類)
Order	Perciformes (ペルカ目)	Rodentia (ネズミ目)
Family	Pomacentridae (Clownfish & Damselfish)	Muridae (Mice & Rats)
Genus	Amphiprion (Clownfish)	Chiropodomys
Species	Hippocampus kuda	Chiropodomys major

Evolutionary Relationship

Common Seahorse and Greater Pencil-tailed Tree Mouse share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Greater Pencil-tailed Tree Mouse

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	Greater Pencil-tailed Tree Mouse
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.

Greater Pencil-tailed Tree Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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。