Oncorhynchus mykiss was reported from 104 countries/islands


Table 1: the species is currently present in 90 of them (endemic, native, introduced);
Table 2: possible in 0 of them (stray, questionable);
Table 3: absent from 14 of them (extirpated, not established, misidentification, error).
Table 4: all reports listed together.

Distribution: Pacific Slope from Kuskokwim River drainage in Alaska to Otay River drainage in California, USA. Widely introduced and established in Canada and USA, including Arctic, Atlantic, Great Lakes, Mississippi River, and Rio Grande basins, and elsewhere in the world (Ref. 86798). Eastern Pacific: Kamchatkan Peninsula and have been recorded from the Commander Islands east of Kamchatka and sporadically in the Sea of Okhotsk as far south as the mouth of the Amur River along the mainland. The records outside Kamchatka probably represent migrating or straying Kamchatkan steelhead (penshinensis) rather than the established native population (Reg. 50080). Several countries report adverse ecological impact after introduction.
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Table 1: Present in 90 countries/islands (endemic, native, introduced)
Continent Country Occurrence Main Ref.
Asia Afghanistan AFG introduced 1739
North America Alaska ALK native 27436
Europe Albania ALB introduced 1739
South America Argentina ARG introduced 9086
Asia Armenia ARM native 41168
Oceania Australia AUS introduced 6390
Europe Austria AUT introduced 59043
Europe Azores Is. AZZ introduced
Europe Belgium BEL introduced 1739
South America Bolivia BOL introduced 1739
South America Brazil BRA introduced 1739
Europe Bulgaria BGR introduced 1739
Africa Cameroon CMR introduced 1739
North America Canada CAN native 1998
South America Chile CHL introduced 1739
Asia China CHN introduced 45864
South America Colombia COL introduced 1739
Africa Congo COG introduced 1739
North America Costa Rica CRI introduced 36880
Europe Croatia HRV introduced 59043
Asia Cyprus CYP introduced 1739
Europe Czechia CZE introduced 54732
Europe Denmark DNK introduced 1739
North America Dominican Rp DOM introduced 1739
South America Ecuador ECU introduced 1739
Europe Estonia EST introduced 33247
Africa Ethiopia ETH introduced 27123
Europe Finland FIN introduced 6114
Europe France FRA introduced 40476
Europe Germany DEU introduced 1739
Europe Greece GRC introduced 41624
South America Guyana GUY introduced 1739
Oceania Hawaii HWI introduced 5360
North America Honduras HND introduced 1739
Europe Hungary HUN introduced 1739
Asia India IND introduced 1739
Asia Iran IRN introduced 27435
Europe Ireland IRL introduced 1739
Asia Israel ISR introduced 1739
Europe Italy ITA introduced 27118
Asia Japan JPN introduced 1739
Asia Jordan JOR introduced 1739
Asia Kazakhstan KAZ introduced 41038
Africa Kenya KEN introduced 52331
Subantarctica Kerguelen Is. KGN introduced 74657
Asia Korea (South) KOR introduced 77001
Asia Kyrgyzstan KGZ introduced 41059
Europe Latvia LVA introduced 55893
Africa Lesotho LSO introduced 52193
Europe Liechtenstein LIE introduced 1739
Europe Lithuania LTU introduced 36252
Europe Luxembourg LUX introduced 1739
Africa Madagascar MDG introduced 94653
Africa Madeira Is. MRA introduced 57074
Africa Malawi MWI introduced 52193
North America Mexico MEX native 42864
Africa Morocco MAR introduced 50056
Africa Mozambique MOZ introduced 1739
Asia Nepal NPL introduced 9496
Oceania New Zealand NZL introduced 1739
Europe Norway NOR introduced 1739
Asia Pakistan PAK introduced 51161
North America Panama PAN introduced 1739
Oceania Papua New Guinea PNG introduced 2847
South America Peru PER introduced 1739
Europe Poland POL introduced 1739
Europe Portugal PRT introduced 1739
Africa Réunion REU introduced 82332
Europe Romania ROU introduced 1739
Europe Russia RUS native 26334
Europe Serbia SRB introduced 1739
Europe Slovakia SVK introduced 90058
Europe Slovenia SVN introduced 27929
Africa South Africa ZAF introduced 52193
Europe Spain ESP introduced 1739
Asia Sri Lanka LKA introduced 6028
Africa Sudan SDN introduced 1739
Africa Swaziland SWZ introduced 52193
Europe Sweden SWE introduced 1739
Europe Switzerland CHE introduced 79869
Asia Taiwan TWN introduced 1739
Africa Tanzania TZA introduced 4967
Asia Turkey TUR introduced 27435
Africa Uganda UGA introduced 1739
Europe UK GBR introduced 1739
Europe Ukraine UKR introduced 12309
North America USA USA native 86798
Asia Uzbekistan UZB introduced 11145
South America Venezuela VEN introduced 1739
Africa Zimbabwe ZWE introduced 94654

Table 3: Absent from 14 country/island (extirpated, not established, misidentification, error)
Continent Country Occurrence Main Ref.
Africa Algeria DZA not established 83305
Europe Iceland ISL not established 1739
Asia Indonesia IDN not established 6093
Asia Iraq IRQ not established 27435
Asia Lebanon LBN not established 1739
Asia Malaysia MYS not established 1739
Africa Mauritius MUS not established 1739
Europe Netherlands NLD not established 1739
Asia Syria SYR not established 1739
Oceania Tahiti TIT not established 6349
Asia Thailand THA not established 6301
Africa Tunisia TUN not established 13686
South America Uruguay URY not established 13686
Africa Zambia ZMB not established 55909

Table 4: Reported from 104 countries/islands.
Continent Country Occurrence Main Ref.
Asia Afghanistan AFG introduced 1739
North America Alaska ALK native 27436
Europe Albania ALB introduced 1739
Africa Algeria DZA not established 83305
South America Argentina ARG introduced 9086
Asia Armenia ARM native 41168
Oceania Australia AUS introduced 6390
Europe Austria AUT introduced 59043
Europe Azores Is. AZZ introduced
Europe Belgium BEL introduced 1739
South America Bolivia BOL introduced 1739
South America Brazil BRA introduced 1739
Europe Bulgaria BGR introduced 1739
Africa Cameroon CMR introduced 1739
North America Canada CAN native 1998
South America Chile CHL introduced 1739
Asia China CHN introduced 45864
South America Colombia COL introduced 1739
Africa Congo COG introduced 1739
North America Costa Rica CRI introduced 36880
Europe Croatia HRV introduced 59043
Asia Cyprus CYP introduced 1739
Europe Czechia CZE introduced 54732
Europe Denmark DNK introduced 1739
North America Dominican Rp DOM introduced 1739
South America Ecuador ECU introduced 1739
Europe Estonia EST introduced 33247
Africa Ethiopia ETH introduced 27123
Europe Finland FIN introduced 6114
Europe France FRA introduced 40476
Europe Germany DEU introduced 1739
Europe Greece GRC introduced 41624
South America Guyana GUY introduced 1739
Oceania Hawaii HWI introduced 5360
North America Honduras HND introduced 1739
Europe Hungary HUN introduced 1739
Europe Iceland ISL not established 1739
Asia India IND introduced 1739
Asia Indonesia IDN not established 6093
Asia Iran IRN introduced 27435
Asia Iraq IRQ not established 27435
Europe Ireland IRL introduced 1739
Asia Israel ISR introduced 1739
Europe Italy ITA introduced 27118
Asia Japan JPN introduced 1739
Asia Jordan JOR introduced 1739
Asia Kazakhstan KAZ introduced 41038
Africa Kenya KEN introduced 52331
Subantarctica Kerguelen Is. KGN introduced 74657
Asia Korea (South) KOR introduced 77001
Asia Kyrgyzstan KGZ introduced 41059
Europe Latvia LVA introduced 55893
Asia Lebanon LBN not established 1739
Africa Lesotho LSO introduced 52193
Europe Liechtenstein LIE introduced 1739
Europe Lithuania LTU introduced 36252
Europe Luxembourg LUX introduced 1739
Africa Madagascar MDG introduced 94653
Africa Madeira Is. MRA introduced 57074
Africa Malawi MWI introduced 52193
Asia Malaysia MYS not established 1739
Africa Mauritius MUS not established 1739
North America Mexico MEX native 42864
Africa Morocco MAR introduced 50056
Africa Mozambique MOZ introduced 1739
Asia Nepal NPL introduced 9496
Europe Netherlands NLD not established 1739
Oceania New Zealand NZL introduced 1739
Europe Norway NOR introduced 1739
Asia Pakistan PAK introduced 51161
North America Panama PAN introduced 1739
Oceania Papua New Guinea PNG introduced 2847
South America Peru PER introduced 1739
Europe Poland POL introduced 1739
Europe Portugal PRT introduced 1739
Africa Réunion REU introduced 82332
Europe Romania ROU introduced 1739
Europe Russia RUS native 26334
Europe Serbia SRB introduced 1739
Europe Slovakia SVK introduced 90058
Europe Slovenia SVN introduced 27929
Africa South Africa ZAF introduced 52193
Europe Spain ESP introduced 1739
Asia Sri Lanka LKA introduced 6028
Africa Sudan SDN introduced 1739
Africa Swaziland SWZ introduced 52193
Europe Sweden SWE introduced 1739
Europe Switzerland CHE introduced 79869
Asia Syria SYR not established 1739
Oceania Tahiti TIT not established 6349
Asia Taiwan TWN introduced 1739
Africa Tanzania TZA introduced 4967
Asia Thailand THA not established 6301
Africa Tunisia TUN not established 13686
Asia Turkey TUR introduced 27435
Africa Uganda UGA introduced 1739
Europe UK GBR introduced 1739
Europe Ukraine UKR introduced 12309
South America Uruguay URY not established 13686
North America USA USA native 86798
Asia Uzbekistan UZB introduced 11145
South America Venezuela VEN introduced 1739
Africa Zambia ZMB not established 55909
Africa Zimbabwe ZWE introduced 94654
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The map in this page was supported by BioFresh that has received funding from the
European Union's Seventh Programme for research, technological development and demonstration under grant agreement No 226874

cfm script by eagbayani, 10.05.99 ,  php script by rolavides, 04/02/08 ,  last modified by sortiz, 06.27.17