Common Seahorse vs Red-crested Cardinal

Hippocampus kuda compared with Paroaria coronata

Key Differences

• Common Seahorse is Vulnerable while Red-crested Cardinal is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	Red-crested Cardinal
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Actinopterygii (Ray-finned Fish)	Aves (Birds)
Order	Perciformes (Perch-like Fish)	Passeriformes (Songbirds)
Family	Pomacentridae (Clownfish & Damselfish)	Thraupidae
Genus	Amphiprion (Clownfish)	Paroaria
Species	Hippocampus kuda	Paroaria coronata

Evolutionary Relationship

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

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Red-crested Cardinal

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	Red-crested Cardinal
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.

Red-crested Cardinal

Habitat

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

Range

Widely distributed across Asia (Japan, Taiwan, United Arab Emirates), Europe (8 countries), North America (United States), and South America (Chile, Ecuador, Peru).

Common Seahorse

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

Red-crested Cardinal

A striking medium-sized bird with brilliant red crest, white face, and grey body native to South America from Bolivia and Brazil to Argentina, red-crested cardinals have been introduced to Hawaii and other Pacific islands, becoming iconic garden birds in Honolulu. They inhabit dense shrubs, grassland edges, and suburban gardens, foraging on seeds and small insects. Despite their name and superficial resemblance, they are not closely related to North American cardinals but belong to the tanager family.

Shared Countries

Both species can be found in 1 countries:

🇯🇵 Japan