Common Seahorse vs Melancholy Thistle

Hippocampus kuda compared with Cirsium heterophyllum

Key Differences

• Common Seahorse is Vulnerable while Melancholy Thistle is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	Melancholy Thistle
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Actinopterygii (Ray-finned Fish)	Magnoliopsida (Dicots)
Order	Perciformes (Perch-like Fish)	Asterales (Daisies & Sunflowers)
Family	Pomacentridae (Clownfish & Damselfish)	Asteraceae (Daisy Family)
Genus	Amphiprion (Clownfish)	Cirsium
Species	Hippocampus kuda	Cirsium heterophyllum

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Melancholy Thistle

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	Melancholy Thistle
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.

Melancholy Thistle

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found across Europe (6 countries).

Common Seahorse

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