Common Seahorse vs European otter

Hippocampus kuda compared with Lutra lutra

Key Differences

• European otter is 1000.0x heavier than Common Seahorse.
• European otter lives longer (10 years vs 5 years).

Taxonomic Classification

Rank	Common Seahorse	European otter
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class	Actinopterygii (Ray-finned Fish)	Mammalia (lớp Thú)
Order	Perciformes (Bộ Cá vược)	Carnivora (bộ Ăn thịt)
Family	Pomacentridae (Clownfish & Damselfish)	Mustelidae (Weasels & Otters)
Genus	Amphiprion (Clownfish)	Lutra (Otters)
Species	Hippocampus kuda	Lutra lutra

Evolutionary Relationship

Common Seahorse and European otter share a common ancestor at the Phylum level: Chordata. (động vật có dây sống)

Conservation Status

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Common Seahorse	European otter
Diet	Carnivore	Carnivore
Average Lifespan	5 years	10 years
Average Length	17 cm	1.0 m
Average Weight	10 g	10.0 kg

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.

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Seahorse

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

European otter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.