Common Seahorse vs Niceforo Maria’s Oldfield Mouse

Hippocampus kuda compared with Thomasomys nicefori

Key Differences

• Common Seahorse is Vulnerable while Niceforo Maria’s Oldfield Mouse is Least Concern.

Taxonomic Classification

Rank	Common Seahorse	Niceforo Maria’s Oldfield Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Actinopterygii (Ray-finned Fish)	Mammalia (Mammals)
Order	Perciformes (Perch-like Fish)	Rodentia (Rodents)
Family	Pomacentridae (Clownfish & Damselfish)	Cricetidae
Genus	Amphiprion (Clownfish)	Thomasomys
Species	Hippocampus kuda	Thomasomys nicefori

Evolutionary Relationship

Common Seahorse and Niceforo Maria’s Oldfield Mouse share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Physical Characteristics

Attribute	Common Seahorse	Niceforo Maria’s Oldfield Mouse
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.

Niceforo Maria’s Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Common Seahorse

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