Arctic Lamprey [Lethenteron]

Description

Lethenteron is a genus of lampreys in the family Petromyzontidae, known for their anadromous lifecycle, spending most of their life in the sea and migrating to freshwater to spawn. They are characterized by a toothed, funnel-like sucking mouth, and species within this genus lack paired fins. Their bodies are elongated and eel-like, and they have a series of pore-like gill openings on the sides of their head. Arctic Lamprey and other species within this genus are important for their role in nutrient cycling in freshwater ecosystems.

Species

Taxonomy