Home > Animals > Fish > Pacific lamprey

Pacific lamprey

(Entosphenus tridentatus)


Category: Fish



These anadromous, parasitic fish inhabit the Pacific coasts of North America and Asia. They spend most of the life cycle as larvae, living in freshwater – around 3-7 years. Adults live 1-2 years at sea, parasitizing other fish and sperm whales. The return to freshwater to spawn, typically in habitats similar to salmon and trout. Pacific lamprey are an important ceremonial food source to Native Americans in the Columbia River basin and the Yurok tribe in Northern California.


Data & Facts

Scientific Classification
Kingdom - Animalia
Phylum - Chordata
Class - Cephalaspidomorphi
Order - Petromyzontiformes
Family - Petromyzontidae
Genus - Entosphenus
Species - E. tridentatus

Did you know?
Interesting Animal Facts

ABC. It’s easy as Protandry

The largest, most aggressive female anemonefish rules the roost - she is the dominant member of the social group, and with one breeding male, the only one who reproduces. In anemonefish society, everybody knows where they stand in the hierarchy! So when she leaves the group, everybody moves up one spot - including the largest, most aggressive male, who undergoes a sex change to become the leader (and breeding female) of the group. While undergoing a sex change might sound drastic to humans, it is actually not all that uncommon in other species. Many do it, either naturally or due to environmental factors: fish, invertebrates, amphibians, some reptiles, even the occasional chicken!

Learn more >>


NAIA - National Animal Interest Alliance Discover Animals is a web-based educational resource offered by the NAIA
To learn more about the NAIA or about other NAIA programs, visit us at www.NAIAOnline.org
if you would like to help, join or support the NAIA or any of its programs please click here >>