AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Oncorhynchus mykiss [WoRMS] | |
Authority | (Walbaum, 1792) | |
Family | Salmonidae | |
Order | Salmoniformes | |
Class | Actinopterygii | |
Phylum | Chordata | |
Synonym (?) | Fario gairdneri (Richardson, 1836) Oncorhynchus gairdnerii (Richardson, 1836) Oncorhynchus kamloops (Jordan, 1892) Oncorhynchus mykiss nelsoni (Evermann, 1908) Parasalmo mykiss (Walbaum, 1792) |
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Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: NW America North-east pacific N America Oncorhynchus mykiss is native to Armenia, Canada, Mexico, Russia and the USA. It has been introduced throughout the world. |
Life form / Life stage (?) |
Comments: Rainbow trout is an anadromous, cool- to cold-water fish species. |
Sociability / Life stage (?) |
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Reproductive frequency (?) | Iteroparous Comments: Similar to Atlantic salmon, but unlike their Pacific Oncorhynchus salmonid kin, steelhead are iteroparous (able to spawn several times, each time separated by months) and make several spawning trips between fresh and salt water. |
Reproductive type (?) | Sexual References: Kottelat M, Freyhof F (2007) Handbook of European freshwater fishes. Publications Kottelat, Cornol, Switzerland. 646p |
Developmental trait (?) | Spawning References: Kottelat M, Freyhof F (2007) Handbook of European freshwater fishes. Publications Kottelat, Cornol, Switzerland. 646p Comments: Undertakes short spawning migrations. Anadromous and lake forms may migrate long distances to spawning streams. Eggs are laid in shallow nests dug out by the female in gravel riffles. The eggs require continuous oxygenation. At temperatures of about 55°F, the eggs will hatch approximately 21 days after they are laid. |
Characteristic feeding method / Life stage (?) |
References (not structured): Kottelat M, Freyhof F (2007) Handbook of European freshwater fishes. Publications Kottelat, Cornol, Switzerland. 646p Comments: Feeds on a variety of aquatic and terrestrial invertebrates and small fishes. |
Mobility / Life stage (?) |
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Salinity tolerance range (?) | Venice system: 1. Limnetic [<0.5psu] References: Weidema IR (2000) Introduced species in the nordic countries, Nord, 13 : 242pp |
Habitat modifying ability potential (?) | Autogenic ecosystem engineers |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Not entered |
Known human health impact? | Not entered |
Known economic impact? | Not entered |
Known measurable environmental impact? | Not entered |
Included in the Target Species list? | Not entered |
Association with vessel vectors (?) | Unknown |
Molecular information | Not entered |
Last update by | Henn Ojaveer, 2015-06-05 |