Arctic Lamprey
■ Type: Fish
■ Diet: Omnivore
■ Average lifespan in the wild: 7 years
■ Size: Maximum length is 625mm
■ Weight: 200 grams
■ Group name: Blind or Run
■ Apperance:
■ Diet: Omnivore
■ Average lifespan in the wild: 7 years
■ Size: Maximum length is 625mm
■ Weight: 200 grams
■ Group name: Blind or Run
■ Apperance:
Characterized by 2 large teeth on the supraoral bars, the presence of only 2 points on the central pair of lateral tooth plates, and the presence of a row of posterial teeth. Dorsal fins arise far back on body, the anterior dorsal lower than the posterior, the fins higher in males; lower lobe of caudal fin is somewhat larger than upper, the fin joined to both dorsal and anal fins; anal fin small, in males represented only by a low ridge. Color ranges from brown to olive to grayish above, paler below. The non-anadromous form rarely grows larger than 18 cm. Adults inhabits coastal and estuarine waters. Prefer sites with stony or sandy bottom, shaded by riparian vegetation. Spawning adults found in gravel riffles and runs of clear streams; feeding adults usually in oceans or lakes; ammocoetes in muddy margins and backwaters of river and lakes. Anadromous. There are non-migratory freshwater populations. Probably parasitizes any species of fish of suitable size, including commercial species. Subadults are non-parasitic. Feed on small aquatic invertebrates, algae and organic matter contained in detritus. Arctic lamprey has high quality flesh rich in fat.
It is typically an anadromous species but in some areas of North America and Asia there are present land-locked populations. Berg (1931a) recognized three forms of L. japonicum, which differ, in addition to their distribution, by their sizes. The largest form is found along the Pacific coasts. The lack of comparative material prevents our further consideration of these forms.
Food: all populations of L. japonicum parasitize different types of fish in salt- and freshwater habitats. Reproduction: the number of eggs varies according to the size of the female from 80,000 to 107,000. The eggdiameter is approximately 1 mm.
It is typically an anadromous species but in some areas of North America and Asia there are present land-locked populations. Berg (1931a) recognized three forms of L. japonicum, which differ, in addition to their distribution, by their sizes. The largest form is found along the Pacific coasts. The lack of comparative material prevents our further consideration of these forms.
Food: all populations of L. japonicum parasitize different types of fish in salt- and freshwater habitats. Reproduction: the number of eggs varies according to the size of the female from 80,000 to 107,000. The eggdiameter is approximately 1 mm.
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⋆All info I took out of here:
- http://en.wikipedia.org/wiki/Arctic_lamprey
- http://species-identification.org/species.php?species_group=fnam&id=948
⋆All pictures I took out of Wikipedia and Flickr:
- http://www.wikipedia.org/
- http://www.fishbase.org/summary/speciessummary.php?id=2524
- http://www.taiga.net/yourYukon/col331.html
- http://www.arctic.uoguelph.ca/cpl/organisms/fish/fresh/lamprey/arcticlamprey.htm
Special thanks to MoonShine to help to found this info.
- http://en.wikipedia.org/wiki/Arctic_lamprey
- http://species-identification.org/species.php?species_group=fnam&id=948
⋆All pictures I took out of Wikipedia and Flickr:
- http://www.wikipedia.org/
- http://www.fishbase.org/summary/speciessummary.php?id=2524
- http://www.taiga.net/yourYukon/col331.html
- http://www.arctic.uoguelph.ca/cpl/organisms/fish/fresh/lamprey/arcticlamprey.htm
Special thanks to MoonShine to help to found this info.