Common Seahorse vs Double-crested Cormorant

Hippocampus kuda compared with Phalacrocorax auritus

Key Differences

• Common Seahorse is Vulnerable while Double-crested Cormorant is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	Double-crested Cormorant
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Actinopterygii (Ray-finned Fish)	Aves (Birds)
Order	Perciformes (Perch-like Fish)	Suliformes (Suliformes)
Family	Pomacentridae (Clownfish & Damselfish)	Phalacrocoracidae
Genus	Amphiprion (Clownfish)	Phalacrocorax
Species	Hippocampus kuda	Phalacrocorax auritus

Evolutionary Relationship

Common Seahorse and Double-crested Cormorant share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Double-crested Cormorant

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	Double-crested Cormorant
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.

Double-crested Cormorant

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Europe (5 countries), North America (United States), and South America (Colombia).

Common Seahorse

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

Double-crested Cormorant

Double-crested Cormorant (Phalacrocorax auritus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.