Asian swordfern vs Brown Rat

Nephrolepis brownii compared with Rattus norvegicus

Key Differences

• Asian swordfern is Not Evaluated while Brown Rat is Least Concern.

Taxonomic Classification

Rank	Asian swordfern	Brown Rat
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (Chordates)
Class	Polypodiopsida (Polypodiopsida)	Mammalia (Mammals)
Order	Polypodiales (Polypodiales)	Rodentia (Rodents)
Family	Nephrolepidaceae	Muridae (Mice & Rats)
Genus	Nephrolepis	Rattus
Species	Nephrolepis brownii	Rattus norvegicus

Conservation Status

Asian swordfern

NE — Not Evaluated

Brown Rat

LC — Least Concern

Physical Characteristics

Attribute	Asian swordfern	Brown Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Asian swordfern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Widely distributed across Asia (Singapore, Taiwan), North America (4 countries), and South America (Brazil, Colombia).

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).

Asian swordfern

The Asian swordfern (Nephrolepis brownii) is a species in the genus Nephrolepis. Typically found in moist, shaded forest floors and tropical canopies. Widely distributed across Asia (Singapore, Taiwan), North America (4 countries), and South America (Brazil, Colombia).

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 7 countries:

🇧🇷 Brazil 🇨🇴 Colombia 🇰🇳 Saint Kitts and Nevis 🇱🇨 Saint Lucia 🇸🇬 Singapore 🇹🇼 Taiwan 🇺🇸 United States