Western brook lamprey (Lampetra richardsoni) fish profile and information / pictures of Western brook lamprey - Lampetra richardsoni

Western brook lamprey (Lampetra richardsoni) fish profile

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Scientific Name Lampetra richardsoni
Classified By Vladykov & Follett, 1965
Common Name Western brook lamprey
Class Lampreys (Cephalaspidomorphi)
Order Lampreys (Petromyzontiformes)
Family Lampreys (Petromyzontidae)
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.
Climate Temperate
Water Temperature From - Celcius Unknown °C
Water Temperature To - Celcius Unknown °C
Depth From - meters Unknown m
Depth To - meters Unknown m
Zone demersal
Distribution North America: Pacific slope from McDonald Lake, southeastern Alaska to Umpqua River drainage in Oregon, USA.
Region North America
Range 57°N - 43°N
Maximum Length 15.0 cm
Common Length 12.5 cm
Environment Freshwater; demersal; non-migratory
Vulnerability Low to moderate vulnerability (34 of 100)
Resilience Medium, minimum population doubling time 1.4 - 4.4 years (Fec=1,100-3,700 (semelparous))
Threat To Humans Harmless
IUCN Red List Status Not Evaluated
Human Uses Fisheries: of no interest; bait: usually
Phylogenetic Diversity Index PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Trophic Level 2.44000005722046 s.e. 0.23 Based on food items.
Is kept in Aquariums False
Occurs in Marine / Salt water False
Occurs in Brackish water False
Occurs in Fresh Water True
Occurs on Reefs False