Western Brook Lamprey

Photo Credit: Doug Markle, Oregon State University


  • Species Common Name Western Brook Lamprey
  • Species Scientific Name Lampetra richardsoni
  • State Listing Status Sensitive


    Special needs

    May aggregate in high densities. Requires fine gravel beds for spawning. Larvae burrow in fine sediment. Timing of development closely linked to water temperature. May interbreed with Pacific Brook Lamprey and Western River Lamprey.

    Limiting factors

    Habitat access (artificial obstructions), water quantity (reduced flows, flow management), water quality, physical habitat (stream and floodplain degradation), and predation by other species.

    Conservation actions

    Education and outreach; improve passage and screening; protect and restore habitat; water conservation; establish Best Management Practices for in-water work; modify non-native angling regulations. See ODFW’s Conservation Plan for Lampreys for strategies.

    Key reference or plan

    Coastal, Columbia, and Snake Conservation Plan for Lampreys in Oregon