HomeFish encyclopediaLampreysLampreysLampreysModoc Brook lamprey Modoc Brook lamprey (Lampetra folletti) Scientific name: Lampetra folletti Vladykov & Kott, 1976 The Modoc Brook lamprey (Lampetra folletti) is a freshwater fish of the family Petromyzontidae. Native range: North America, known only from the types collected from Willow Creek, upper Klamath river system, California. BiologyDorsal spines: 0; Anal spines: 0. Four pairs of lateral tooth plates;supra oral plate with 4 or fewer dull cusps.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLampetra follettiFamilyPetromyzontidae (Lampreys)OrderPetromyzontiformes (Lampreys)ClassCephalaspidomorphi (Lampreys)Maximum length30.0EnvironmentFreshwater; demersal; non-migratoryClimateSubtropicalDistributionNorth America: known only from the types collected from Willow Creek, upper Klamath river system, California.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceLow, minimum population doubling time 4.5 - 14 years (assuming tm=5) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026