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sevan trout wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 references 2 external links toggle the table of contents sevan trout 28 languages azərbaycanca беларуская català cebuano deutsch español eesti euskara فارسی français hrvatski հայերեն արեւմտահայերէն bahasa indonesia italiano ქართული 한국어 кыргызча nederlands norsk bokmål polski русский srpskohrvatski српскохрватски svenska türkçe українська winaray 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikimedia commons wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia species of fish sevan trout conservation status extinct iucn 3 1 1 scientific classification kingdom animalia phylum chordata class actinopterygii division teleostei order salmoniformes family salmonidae genus salmo species s ischchan binomial name salmo ischchan kessler 1877 the sevan trout salmo ischchan was an extinct endemic fish species of lake sevan in armenia known as ishkhan իշխան pronounced iʃˈχɑn in armenian it is a salmonid fish related to the brown trout salmo ischchan the fish is extinct because various competitors were introduced into the lake during the soviet period including common whitefish coregonus lavaretus from lake ladoga goldfish carassius auratus and narrow clawed crayfish astacus leptodactylus and because of lake level change on the other hand the sevan trout itself has been successfully introduced to issyk kul lake in kyrgyzstan 2 a resolution by armenia s council of ministers in 1976 stopped the commercial fishing of sevan trout and organized sevan national park citation needed the fish are nowadays also reared in hatcheries 3 the sevan trout has four 3 2 or two 4 distinct strains differing in their breeding time and place and growth rate winter bakhtak salmo ischchan ischchan summer bakhtak salmo ischchan aestivalis gegharkuni salmo ischchan gegarkuni bojak salmo ischchan danilewskii the winter bakhtak is the largest form and can grow to considerable size up to 90 cm and 15 kg it breeds within the lake 2 the summer bakhtak is smaller 50 cm and breeds naturally both in rivers and within lake near river mouths 3 gegharkuni is a migratory form that naturally breeds exclusively in rivers it also feeds on plankton in addition to benthos 3 bojak in turn is a dwarfed form that breeds within the lake in the winter and does not exceed 33 cm and 0 25 kg 2 water level regulation has been destructive for sevan trout reproduction currently the summer bakhtak and gegharkuni are mainly propagated by hatcheries the winter bakhtak and bojak may be extinct within the lake 3 from a study of historical samples the four strains or forms were not diagnosable by their mitochondrial dna sequences 5 nevertheless in the checklist of armenian fish 2020 they were listed as different species 6 as a whole the sevan trout is phylogenetically very close to the caspian trout within the brown trout complex 5 references edit freyhof j 2019 salmo ischchan iucn red list of threatened species 2019 e t54923065a54923090 doi 10 2305 iucn uk 2019 1 rlts t54923065a54923090 en retrieved 26 march 2021 1 2 3 4 севанская форель ишхан salmo ischchan kessler 1877 www internevod com 1 2 3 4 5 gabrielyan b k 2001 an annotated checklist of freshwater fishes of armenia naga vol 24 23 29 froese rainer pauly daniel eds salmo ischchan fishbase july 2011 version 1 2 levin boris simonov evgeniy rastorguev sergey boulygina eugenia sharko fedor tsygankova svetlana gabrielyan bardukh roubenyan haikaz mayden richard nedoluzhko artem 2018 high throughput sequencing of the mitochondrial genomes from archived fish scales an example of the endangered putative species flock of sevan trout salmo ischchan hydrobiologia 822 217 228 doi 10 1007 s10750 018 3688 7 s2cid 49559403 kuljanishvili t g epitashvili j freyhof b japoshvili l kalous b levin n mustafayev s ibrahimov s pipoyan and l mumladze 2020 checklist of the freshwater fishes of armenia azerbaijan and georgia journal of applied ichthyology v 36 no 4 501 514 v t e trout and char of the world trout salmonidae trout of europe and atlantic basin salmo adriatic trout anatolian sea trout brown trout fibreno trout ferox trout flathead trout garda lake trout gillaroo isli trout lake lacustrine trout marble trout mediterranean trout ohrid trout prespa trout river trout sea trout sevan trout sonaghen trout of the pacific basin oncorhynchus apache trout coastal cutthroat trout cutthroat trout gila trout golden trout mexican golden trout rainbow trout steelhead true char salvelinus arctic char blunt nosed irish charr brook trout bull trout cole s char coomsaharn char dolly varden trout haddy charr kirikuchi char lake char lake trout lough melvin charr orkney charr silver trout small mouthed char whitespotted char media related to trout at wikimedia commons taxon identifiers salmo ischchan wikidata q2416197 adw salmo_ischchan col 6xcxy eol 211496 fishbase 4792 gbif old 2351641 inaturalist 430033 irmng 10320007 itis 623498 iucn 54923065 ncbi 1035833 open tree of life 183443 worms 1019744 external links edit wikimedia commons has media related to salmo ischchan retrieved from https en wikipedia org w index php title sevan_trout oldid 1363689282 categories iucn red list extinct species salmo freshwater fish of asia endemic fauna of armenia fish described in 1877 geographical indications in armenia taxa named by karl kessler hidden categories articles with short description short description matches wikidata articles with species microformats pages with armenian ipa all articles with unsourced statements articles with unsourced statements from july 2011 commons category link is on wikidata this page was last edited on 11 july 2026 at 18 48 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents sevan trout 28 languages add topic