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Species
Oncorhynchus mykiss mykiss (Walbaum, 1792)
EOL Text
This taxon is one of a number of benthopelagic species in the Amur River system. Benthopelagic river fish are found near the bottom of the water column, feeding on benthos and zooplankton
The persistence of mercury contamination in Amur River bottom sediments is a major issue, arising from historic cinnabar mining in the basin and poor waste management practises, especially in the communist Soviet era, where industrial development was placed ahead of sound conservation practises.
Other large benthopelagic river fish of the Amur Basin is the 200 cm yellowcheek (Elopichthys bambusa) and the 122 cm Mongolian redfin (Chanodichthys mongolicus)
| License | http://creativecommons.org/licenses/by/3.0/ |
| Rights holder/Author | C. Michael Hogan, C. Michael Hogan |
| Origen | http://www.eoearth.org/article/Amur_River?topic=78166 |
體呈紡錘形而側扁。口端位，口裂大，可達眼睛後緣直下方；雄魚口裂更大，上下頜稍具鉤形。鰓被架12-16。體被細小的圓鱗，頭部裸出無鱗。背鰭單一，軟條數11-12；背鰭稍後方有一脂鰭；臀鰭軟條數11-12；腹鰭具腋突；尾鰭叉形。體色隨著棲息地、魚體大小與性別狀態而有所改變： 溪流型與溯河產卵型的魚體比較黑，顏色比較強烈；湖泊型的魚種顏色較淡且比較明亮與偏銀色。一般體背側為灰綠色，腹側銀色，身體、背鰭與尾鰭皆密佈黑點，腹部較少。幼魚體側具有8-13個橢圓形斑塊，成長後消失。生殖季時，成魚體側中央的紫紅色縱帶特別顯著。生育期的雄魚並沒有追星(nuptial tubercles)出現，只有在頭部、口部與體色上有小小的變化。
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | ©臺灣魚類資料庫 [published on TaiEOL] |
| Origen | http://fishdb.sinica.edu.tw/chi/species.php?id=382789 |
Length: 100 cm
Anadromous (Ref. 5951). Young rainbow trout feed predominantly on zooplankton (Ref. 26523). Rainbow trout of all sizes fed mainly on midge (adults, larvae and pupae). As the fish grew larger, terrestrial prey became the most important food item (Ref. 55755). Possible cohabitation with G. olidus (Ref. 26860). Rainbow trout also have sea dwelling populations known as 'steelhead' (Ref. 6390).
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Armi G. Torres, FishBase |
| Origen | No source database. |
Oncorhynchus mykiss larvae go through a series of morphological changes to prepare for life in the sea, and spend their adult life there for 2 to 3 years before migrating upstream to spawn in their natal stream.
Development - Life Cycle: metamorphosis
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | ©1995-2013, The Regents of the University of Michigan and its licensors |
| Origen | http://animaldiversity.ummz.umich.edu/accounts/Oncorhynchus_mykiss/ |
Not Evaluated
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Susan M. Luna, FishBase |
| Origen | http://www.fishbase.org/summary/SpeciesSummary.php?id=239 |
Oncorhynchus mykiss (Walbaum, 1792)
Inland water: 26300-844 (1 spc.), 29.05.1995 , fish farm, Kiyikoey , Kirklareli , Adem Çolak ; 26300-845 (1 spa), 29.05.1995 , fish farm, Kiyikoey , Kirklareli , Adem Çolak .
- Nurettin Meriç, Lütfiye Eryilmaz, Müfit Özulug (2007): A catalogue of the fishes held in the Istanbul University, Science Faculty, Hydrobiology Museum. Zootaxa 1472, 29-54: 37-37, URL:http://www.zoobank.org/urn:lsid:zoobank.org:pub:428F3980-C1B8-45FF-812E-0F4847AF6786
| License | Public Domain |
| Rights holder/Author | No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation. |
| Origen | http://treatment.plazi.org/id/81754B7C11CE352699A9297589BDE713 |
Maximum size: 1200 mm TL
Rainbow trout and steelhead are important predators in their native habitats, they also serve as important sources of food for larger predators.
Commensal/Parasitic Species:
- sea lamprey (Petromyzon_marinus)
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | ©1995-2012, The Regents of the University of Michigan and its licensors |
| Origen | http://www.biokids.umich.edu/critters/Oncorhynchus_mykiss/ |
Oncorhynchus_mykiss larvae go through a series of morphological changes to prepare for life in the sea, and spend their adult life there for 2 to 3 years before migrating upstream to spawn in their natal stream.
Development - Life Cycle: metamorphosis
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | ©1995-2012, The Regents of the University of Michigan and its licensors |
| Origen | http://www.biokids.umich.edu/critters/Oncorhynchus_mykiss/ |