Brown Rat vs floating crystalwort

Rattus norvegicus compared with Riccia fluitans

Key Differences

Brown Rat is Least Concern while floating crystalwort is Near Threatened.

Taxonomic Classification

Rank	Brown Rat	floating crystalwort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Marchantiophyta (liverwort)
Class	Mammalia (Mammals)	Marchantiopsida (Marchantiopsida)
Order	Rodentia (Rodents)	Marchantiales (Marchantiales)
Family	Muridae (Mice & Rats)	Ricciaceae
Genus	Rattus	Riccia
Species	Rattus norvegicus	Riccia fluitans

Conservation Status

Brown Rat

LC — Least Concern

floating crystalwort

NT — Near Threatened

Physical Characteristics

Attribute	Brown Rat	floating crystalwort
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).

floating crystalwort

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (7 countries), North America (United States), and South America (Chile). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.