Common Seahorse vs Four-toed Hedgehog

Hippocampus kuda compared with Atelerix albiventris

Key Differences

• Common Seahorse is Vulnerable while Four-toed Hedgehog is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	Four-toed Hedgehog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Actinopterygii (Ray-finned Fish)	Mammalia (Mammals)
Order	Perciformes (Perch-like Fish)	Erinaceomorpha (Erinaceomorpha)
Family	Pomacentridae (Clownfish & Damselfish)	Erinaceidae
Genus	Amphiprion (Clownfish)	Atelerix
Species	Hippocampus kuda	Atelerix albiventris

Evolutionary Relationship

Common Seahorse and Four-toed Hedgehog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Four-toed Hedgehog

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	Four-toed Hedgehog
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.

Four-toed Hedgehog

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Ecuador and Spain.

Common Seahorse

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