Silver lamprey (Ichthyomyzon unicuspis) fish profile and information / pictures of Silver lamprey - Ichthyomyzon unicuspis

Silver lamprey (Ichthyomyzon unicuspis) fish profile

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Scientific Name Ichthyomyzon unicuspis
Classified By Hubbs & Trautman, 1937
Common Name Silver lamprey
Class Lampreys (Cephalaspidomorphi)
Order Lampreys (Petromyzontiformes)
Family Lampreys (Petromyzontidae)
Biology Feeding adults are usually found attached to other fishes in large rivers, lakes, and impoundments. They migrate upriver to spawn in gravel riffles and runs. Ammocoetes occur in sandy or muddy pools and backwaters where they stay as larvae for about 4 to 7 years. Adults are parasitic for 1 to 2 years. Semelparous. Listed as anadromous species in Ref. 51243.
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: Mississippi drainage and the Great Lakes to Hudson Bay and the St. Lawrence River. Readily distinguishable from the sea lamprey by its single dorsal fin.
Region North America
Range 59°N - 30°N
Maximum Length 39.0 cm
Common Length 20.1 cm
Environment Freshwater; demersal; potamodromous
Vulnerability High vulnerability (60 of 100)
Resilience Low, minimum population doubling time 4.5 - 14 years (tmax=8; tm=6; Fec=10,800)
Threat To Humans Harmless
IUCN Red List Status Not Evaluated
Human Uses Bait: occasionally
Phylogenetic Diversity Index PD50 = 0.5156 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Trophic Level 4.5 s.e. 0.80 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