Range and Identity
Entosphenus folletti remains recognized in the current taxonomic catalog. The original locality is near Clear Lake Reservoir in the Klamath River basin. This specific history is more informative than interpreting the common name as evidence for a continuous statewide distribution.
Habitat and Behavior
The available life-history account describes larvae in soft sediment and transformed adults that do not parasitize other fishes. Larval and adult observations should retain their stage because the burrowing form can look quite different. A juvenile record alone may require specialist identification.
Size and Life-History Records
Adults reproduce without an extended feeding phase and die after spawning. The descriptive account reports adults from 17.6 to 22.8 centimeters total length. That observed range is retained separately from an uncertain thirty-centimeter maximum, and measurements of other Klamath lampreys are not used to resolve the difference.
Field Note
Preserve the exact collection locality and the features used to identify the lamprey. Several forms in a single river basin can complicate older records.
All Lakes With Northern California Brook Lamprey
Browse lakes and reservoirs with documented Northern California Brook Lamprey records, listed alphabetically. Records do not establish current abundance or public access. Check the evidence and managing authority for the water you choose.
No published lakes are currently linked to this species in our confirmed records.