Common Seahorse vs Plain-crowned Spinetail

Hippocampus kuda compared with Synallaxis gujanensis

Key Differences

• Common Seahorse is Vulnerable while Plain-crowned Spinetail is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	Plain-crowned Spinetail
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)	Furnariidae
Genus	Amphiprion (Clownfish)	Synallaxis
Species	Hippocampus kuda	Synallaxis gujanensis

Evolutionary Relationship

Common Seahorse and Plain-crowned Spinetail share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Plain-crowned Spinetail

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	Plain-crowned Spinetail
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.

Plain-crowned Spinetail

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Common Seahorse

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