Canadian beaver vs White Thread Fish

Castor canadensis compared with Holothuria leucospilota

Key Differences

• Canadian beaver is Not Evaluated while White Thread Fish is Least Concern.

Taxonomic Classification

Rank	Canadian beaver	White Thread Fish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Echinodermata (Echinoderms)
Class	Mammalia (Mammals)	Holothuroidea (Holothuroidea)
Order	Rodentia (Rodents)	Holothuriida (Holothuriida)
Family	Castoridae (Beavers)	Holothuriidae
Genus	Castor (Beavers)	Holothuria
Species	Castor canadensis	Holothuria leucospilota

Evolutionary Relationship

Canadian beaver and White Thread Fish share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

White Thread Fish

LC — Least Concern

Physical Characteristics

Attribute	Canadian beaver	White Thread Fish
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	1.0 m	—
Average Weight	25.0 kg	—

Habitat & Geographic Range

Canadian beaver

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Europe (15 countries), North America (United States), and South America (Argentina, Chile).

White Thread Fish

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

Canadian beaver

The largest rodent in North America, Canadian beavers weigh up to 32 kg and are master ecosystem engineers inhabiting rivers, lakes, and wetlands across Canada and the northern United States. By felling trees and constructing dams up to hundreds of meters long, beavers create ponds that provide habitat for hundreds of species. Their lodges and canals transform entire watersheds. Once nearly hunted to extinction for their fur, beaver populations have recovered strongly.