Least Brook Lamprey vs River Lamprey

Lampetra aepyptera compared with Lampetra ayresii

Taxonomic Classification

Rank	Least Brook Lamprey	River Lamprey
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Petromyzonti (七鳃鳗纲)	Petromyzonti (七鳃鳗纲)
Order same	Petromyzontiformes (七鰓鰻目)	Petromyzontiformes (七鰓鰻目)
Family same	Petromyzontidae	Petromyzontidae
Genus same	Lampetra	Lampetra
Species	Lampetra aepyptera	Lampetra ayresii

Evolutionary Relationship

Least Brook Lamprey and River Lamprey share a common ancestor at the Genus level: Lampetra.

Conservation Status

Least Brook Lamprey

LC — Least Concern

River Lamprey

LC — Least Concern

Physical Characteristics

Attribute	Least Brook Lamprey	River Lamprey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—