Far Eastern Brook Lamprey vs Japanese Weasel

Lethenteron reissneri compared with Mustela itatsi

Key Differences

• Far Eastern Brook Lamprey is Least Concern while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank	Far Eastern Brook Lamprey	Japanese Weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Petromyzonti (Petromyzonti)	Mammalia (Mammals)
Order	Petromyzontiformes (lamprey)	Carnivora (Carnivorans)
Family	Petromyzontidae	Mustelidae (Weasels & Otters)
Genus	Lethenteron	Mustela
Species	Lethenteron reissneri	Mustela itatsi

Evolutionary Relationship

Far Eastern Brook Lamprey and Japanese Weasel share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Far Eastern Brook Lamprey

LC — Least Concern

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute	Far Eastern Brook Lamprey	Japanese Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Far Eastern Brook Lamprey

Japanese Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Japan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.