Amur Hedgehog vs Common Seahorse

Erinaceus amurensis compared with Hippocampus kuda

Key Differences

• Amur Hedgehog is Least Concern while Common Seahorse is Vulnerable.

Taxonomic Classification

Rank	Amur Hedgehog	Common Seahorse
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Actinopterygii (Ray-finned Fish)
Order	Erinaceomorpha (Erinaceomorpha)	Perciformes (ペルカ目)
Family	Erinaceidae	Pomacentridae (Clownfish & Damselfish)
Genus	Erinaceus	Amphiprion (Clownfish)
Species	Erinaceus amurensis	Hippocampus kuda

Evolutionary Relationship

Amur Hedgehog and Common Seahorse share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Amur Hedgehog

LC — Least Concern

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Physical Characteristics

Attribute	Amur Hedgehog	Common Seahorse
Diet	—	Carnivore
Average Lifespan	—	5 years
Average Length	—	17 cm
Average Weight	—	10 g

Habitat & Geographic Range

Amur Hedgehog

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Japan.

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.

Amur Hedgehog

The Amur Hedgehog (Erinaceus amurensis) is a species in the genus Erinaceus. It is currently classified as Least Concern on the IUCN Red List. 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。

Shared Countries

Both species can be found in 1 countries:

🇯🇵 Japan