Western brook lamprey (Lampetra richardsoni)

Scientific name: Lampetra richardsoni Vladykov & Follett, 1965

Western brook lamprey (Lampetra richardsoni)

The Western brook lamprey (Lampetra richardsoni) is a freshwater fish of the family Petromyzontidae. Native range: North America, Pacific slope from McDonald Lake, southeastern Alaska to Umpqua River drainage in Oregon, USA.

Biology

Distinguished by the very blunt teeth, the lack of a distinct median tooth on the tongue and the lack of posterial teeth. Anterior dorsal fin lower than the posterior, arising well back on body; caudal fin joined to both dorsal and anal fins; anal fin small, represented in males by a low ridge. Females with a pointed 2nd dorsal fin and a conspicuous anal lobe. Back and sides dark gray to brown, ventral side of body whitish; fins translucent olive-green and the caudal fin with diffuse black pigment.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Lampetra richardsoni
Family
Petromyzontidae (Lampreys)
Order
Petromyzontiformes (Lampreys)
Class
Cephalaspidomorphi (Lampreys)
Maximum length
15.0
Common length
12.5
Environment
Freshwater; demersal; non-migratory
Climate
Temperate
Distribution
North America: Pacific slope from McDonald Lake, southeastern Alaska to Umpqua River drainage in Oregon, USA.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries: of no interest; bait: usually
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Fec=1,100-3,700 (semelparous))

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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