Highfin dogfish vs Polynesian rat

Centroscyllium excelsum compared with Rattus exulans

Key Differences

• Highfin dogfish is Near Threatened while Polynesian rat is Least Concern.

Taxonomic Classification

Rank	Highfin dogfish	Polynesian rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Squaliformes (Squaliformes)	Rodentia (Rodents)
Family	Etmopteridae	Muridae (Mice & Rats)
Genus	Centroscyllium	Rattus
Species	Centroscyllium excelsum	Rattus exulans

Evolutionary Relationship

Highfin dogfish and Polynesian rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Highfin dogfish

NT — Near Threatened

Polynesian rat

LC — Least Concern

Physical Characteristics

Attribute	Highfin dogfish	Polynesian rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Highfin dogfish

Polynesian rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical coniferous forests, among 4 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (6 countries), Europe (United Kingdom), North America (United States), Oceania and the Pacific (11 countries), and South America (Chile).