Brown Rat vs gammarid shrimp

Rattus norvegicus compared with Gammarus salinus

Key Differences

• Brown Rat is Least Concern while gammarid shrimp is Not Evaluated.

Taxonomic Classification

Rank	Brown Rat	gammarid shrimp
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Malacostraca (Crustaceans)
Order	Rodentia (Rodents)	Amphipoda (Amphipoda)
Family	Muridae (Mice & Rats)	Gammaridae
Genus	Rattus	Gammarus
Species	Rattus norvegicus	Gammarus salinus

Evolutionary Relationship

Brown Rat and gammarid shrimp share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brown Rat

LC — Least Concern

gammarid shrimp

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Rat	gammarid shrimp
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Rat

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 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

gammarid shrimp

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Distributed across Denmark, Norway, and Sweden.

Brown Rat

Brown Rat (Rattus norvegicus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden