{{Short description|Species of ray-finned fish}} {{Speciesbox | image = FMIB 47469 Coilia ectenes.jpeg | image_alt = | image_caption = | taxon = Coilia nasus | authority = Temminck & Schlegel, 1846 | synonyms = ''Coilia ectenes'' <small>Jordan & Seale, 1905</small> | synonyms_ref = <ref name=CoF/><ref name = GBIF>{{cite web |url=https://www.gbif.org/species/2413717 |title= ''Coilia nasus''|accessdate=2014-05-30 |work= Global Biodiversity Information Facility (GBIF)}}</ref><ref name = EOL>{{cite encyclopedia |url=http://eol.org/pages/206634/names/synonyms |title= ''Coilia nasus''|accessdate=2014-05-30 |encyclopedia= The Encyclopedia of Life (EOL)}}</ref><ref name = FAO>{{cite book|last=Whitehead|first=Peter J.P.|author2=Gareth J. Nelson|author3=Thosaporn Wongratana|title=FAO species catalogue. Vol. 7. Clupeoid fishes of the world. An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, anchovies and wolfherrings. Part 2 - Engraulididae|year=1988|publisher=Food & Agriculture Org.|location=Rome|pages=470–472}}</ref> }} thumb|Sashimi of ''etsu''
'''''Coilia nasus''''',<ref name=CoF/><ref name = GBIF/><ref name = EOL/><ref name = FAO/> commonly known as the '''Japanese grenadier anchovy''' or '''Chinese tapertail anchovy''', is a species of ray-finned fish in the anchovy family Engraulidae. It grows to {{convert|41|cm|abbr=on}} total length,<ref name = FAO/><ref name=FishBase/> making it one of the largest species of its genus.<ref name = FAO/>
== Distribution and habitat == ''Coilia nasus'' is found in marine, brackish and freshwater environments at depths of up to {{convert|50|m|abbr=on}}. In saltwater, it is distributed in the northwest Pacific, between 21–42°N and 109–134°E,<ref name="FishBase" /> or from Guangdong in China to the west coast of the Korean Peninsula and the Ariake Sea in southwestern Japan.<ref name="FAO" /><ref name="Arca">{{Cite web |title=Ung-eo fish - Ark of Taste |url=https://www.fondazioneslowfood.com/en/ark-of-taste-slow-food/ung-eo-fish/ |accessdate=11 April 2018 |website=Slow Food Foundation}}</ref><ref name="FishBase" /> In freshwater, it is distributed in various rivers that flow into the aforementioned seas and various lakes connecting these rivers in China, Japan and the Korean Peninsula.
''Coilia nasus'' is an anadromous fish species.<ref name="FAO" /><ref name="FishBase" /> In China, for example, some populations migrate every spring up the Yangtze River before their final gonadal maturation in order to spawn in the middle and lower reaches of the Yangtze. After this, the mature fish migrate back to sea. There are also populations resident in freshwater lakes during their entire life cycle, making this species an interesting model of partial migration or migratory dimorphism, and studies have been conducted to understand this better,<ref>{{Cite journal |last1=Chapman |first1=B. B. |last2=Hulthén |first2=K. |last3=Brodersen |first3=J. |last4=Nilsson |first4=P. A. |last5=Skov |first5=C. |last6=Hansson |first6=L.-A. |last7=Brönmark |first7=C. |date=2012 |title=Partial migration in fishes: causes and consequences |url=https://www.dora.lib4ri.ch/eawag/islandora/object/eawag%3A9029 |journal=Journal of Fish Biology |language=en |volume=81 |issue=2 |pages=456–478 |bibcode=2012JFBio..81..456C |doi=10.1111/j.1095-8649.2012.03342.x |issn=1095-8649 |pmid=22803720}}</ref> including at the molecular and genetic levels.<ref>{{Cite journal |last1=Xu |first1=Gangchun |last2=Bian |first2=Chao |last3=Nie |first3=Zhijuan |last4=Li |first4=Jia |last5=Wang |first5=Yuyu |last6=Xu |first6=Dongpo |last7=You |first7=Xinxin |last8=Liu |first8=Hongbo |last9=Gao |first9=Jiancao |last10=Li |first10=Hongxia |last11=Liu |first11=Kai |date=2020-01-01 |title=Genome and population sequencing of a chromosome-level genome assembly of the Chinese tapertail anchovy (Coilia nasus) provides novel insights into migratory adaptation |url= |journal=GigaScience |language=en |volume=9 |issue=1 |doi=10.1093/gigascience/giz157 |pmc=6939831 |pmid=31895412}}</ref>
== Relationship with humans == In China, ''Coilia nasus'' is called, among other names, 刀鱼 or 刀鲚. In Japan, it is called 鮆 or エツ (etsu). In South Korea, it is called 웅어 (ungeo).
A traditional delicacy, ''Coilia nasus'' is commercially fished in China, Japan and South Korea. In China, it is one of the most expensive fish sold, with the anadromous populations fetching higher prices than the freshwater-only populations. Hence, the industry is mostly focused on the Yellow Sea, East China Sea and the Yangtze River.<ref>{{Cite journal|last1=Jiang|first1=T.|last2=Yang|first2=J.|last3=Lu|first3=M. J.|last4=Liu|first4=H. B.|last5=Chen|first5=T. T.|last6=Gao|first6=Y. W.|date=2017|title=Discovery of a spawning area for anadromous Coilia nasus Temminck et Schlegel, 1846 in Poyang Lake, China|journal=Journal of Applied Ichthyology|language=en|volume=33|issue=2|pages=189–192|doi=10.1111/jai.13293|issn=1439-0426|doi-access=free|bibcode=2017JApIc..33..189J }}</ref> This species is also farmed in China. alt=Migratory route of the fish.|thumb|Seasonal migration and migratory dimorphism of ''Coilia nasus'' == References == {{Reflist|refs= <ref name=CoF>{{cite web |url=http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatget.asp?spid=4584 |title=Catalog of Fishes |editor1=Eschmeyer, W. N. |editor2=R. Fricke |editor3=R. van der Laan |date=30 June 2017 |publisher=California Academy of Sciences |accessdate=16 July 2017}}</ref>
<ref name=FishBase>{{FishBase |genus=Coilia |species=nasus |month=February |year=2017}}</ref> }}
{{Taxonbar|from=Q5921536}}
nasus Category:Fish of the Pacific Ocean Category:Fish of Korea Category:Oily fish Category:Taxa named by Coenraad Jacob Temminck Category:Taxa named by Hermann Schlegel Category:Fish described in 1846 Category:Ark of Taste foods
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