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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 |