arrow-finned squid vs Common Seahorse

Illex oxygonius compared with Hippocampus kuda

Key Differences

• arrow-finned squid is Least Concern while Common Seahorse is Vulnerable.

Taxonomic Classification

Rank	arrow-finned squid	Common Seahorse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Cephalopoda (Cephalopods)	Actinopterygii (Ray-finned Fish)
Order	Oegopsida (Oegopsida)	Perciformes (Perch-like Fish)
Family	Ommastrephidae	Pomacentridae (Clownfish & Damselfish)
Genus	Illex	Amphiprion (Clownfish)
Species	Illex oxygonius	Hippocampus kuda

Evolutionary Relationship

arrow-finned squid and Common Seahorse share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

arrow-finned squid

LC — Least Concern

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Physical Characteristics

Attribute	arrow-finned squid	Common Seahorse
Diet	—	Carnivore
Average Lifespan	—	5 years
Average Length	—	17 cm
Average Weight	—	10 g

Habitat & Geographic Range

arrow-finned squid

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.

arrow-finned squid

The Arrow-finned squid, Illex oxygonius, is a species. It is currently assessed as least concern on the IUCN Red List.

Common Seahorse

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