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{{Short description|Species of ray-finned fish}}
{{Taxobox
{{Use New Zealand English|date=July 2024}}
| name = Koheru<br>''Decapterus koheru''
{{Speciesbox
| image = Decapterus koheru (koheru).jpg
| image = Decapterus koheru (koheru).jpg
| image_caption =
| image_caption =
| regnum = [[Animalia]]
| status = LC
| status_system = IUCN3.1
| phylum = [[Chordata]]
| status_ref = <ref name="iucn status 19 November 2021">{{cite iucn |author=Smith-Vaniz, W.F. |author2=Carpenter, K.E. |author3=Larson, H. |author4=Matsuura, K. |author5=Motomura, H. |date=2018 |title=''Decapterus koheru'' |volume=2018 |page=e.T20431506A67871580 |doi=10.2305/IUCN.UK.2018-2.RLTS.T20431506A67871580.en |access-date=19 November 2021}}</ref>
| classis = [[Actinopterygii]]
| taxon = Decapterus koheru
| ordo = [[Perciformes]]
| authority = ([[James Hector|Hector]], 1875)
| familia = [[Carangidae]]
| synonyms = ''Caranx koheru'' <small>Hector, 1875</small>
| genus = ''[[Decapterus]]''
| synonyms_ref = <ref name = Fishbase/>
| species = '''''D. koheru'''''
| binomial = ''Decapterus koheru''
| binomial_authority = (Hector, 1875)
}}
}}


The '''koheru''' (''Decapterus koheru'') is a [[ray-finned fish]] of the genus ''[[Decapterus]]'', part of the [[Family (biology)|family]] [[Carangidae]].<ref name = Fishbase>{{FishBase|Decapterus|koheru|month=August|year=2019}}</ref> It is [[Endemism|endemic]] to New Zealand where it occurs from [[Manawatāwhi / Three Kings Islands]] to southern [[North Island]]. This is a schooling, [[pelagic]] species of coastal waters where it is found within shallow bays, harbours, estuaries and near rocky reefs and offshore islands at depths of between {{convert|2 and 90|m|ft}}. Juveniles prefer rocky inshore areas, while adults are known to form dense schools in offshore waters. The maximum [[fish measurement|fork length]] is {{convert|40.3|cm|in}}. They live to around 10 years and juveniles growth quickly, attaining a fork length of {{convert|37|cm|in}} by the time they are three years old.<ref name="iucn status 19 November 2021" /> They feed on [[zooplankton]].<ref name = Fishbase/> It is a species of minor interest to commercial fisheries but is taken by recreational anglers.<ref name="iucn status 19 November 2021" />
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==References==
{{Copyviocore
{{reflist}}
|url=see [[Wikipedia talk:WikiProject Gastropods/Subpage for organizing CopyVio Cleanup]]
* {{ITIS |id=168732 |taxon=''Decapterus koheru'' |accessdate=18 April 2006}}
|month = March
* {{FishBase | genus = Decapterus | species = koheru | month = January | year = 2006}}
|day = 27
* Tony Ayling & Geoffrey Cox, ''Collins Guide to the Sea Fishes of New Zealand'', (William Collins Publishers Ltd, Auckland, New Zealand 1982) {{ISBN|0-00-216987-8}}
|year = 2009
* [[Wade Doak]], ''A Photographic Guide to Sea Fishes of New Zealand'', (New Holland Publishers (NZ) Ltd, Auckland, New Zealand 2003) {{ISBN|1-877246-95-6}}
|time = 12:16
|timestamp = 20090327121614}}
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{{Taxonbar|from=Q2330358}}
The '''koheru''', ''Decapterus koheru'', is a jack of the genus ''[[Decapterus]]'', found only between the [[North Cape]] and the [[East Cape]] of the [[North Island]] of [[New Zealand]], in mid-waters of [[reef]] and offshore areas. Its length is between 25 and 50 cm.


The koheru is a streamlined cylindrical-shaped schooling fish, with [[pelagic]] [[keel]]s on each side of the thin [[caudal peduncle]] edged with a row of sharp [[scute]]s. The mouth has minute teeth in the flexible jaws allowing the mouth to form a [[plankton]] sucking tube.

Koheru are electric blue on the back tinged with green, and silver-white on the belly with a prominent yellow stripe running along the back and on to the caudal peduncle. The stripe can be suppressed by the fish at will. When a koheru school is threatened by a large predator it often dives and uses the reef for protection - unusual behaviour for schooling fish.

==References==
* {{ITIS|ID=168732|taxon=Decapterus koheru|year=2006|date=18 April}}
* {{FishBase species | genus = Decapterus | species = koheru | month = January | year = 2006}}
* Tony Ayling & Geoffrey Cox, ''Collins Guide to the Sea Fishes of New Zealand'', (William Collins Publishers Ltd, Auckland, New Zealand 1982) ISBN 0-00-216987-8
* Wade Doak, ''A Photographic Guide to Sea Fishes of New Zealand'', (New Holland Publishers (NZ) Ltd, Auckland, New Zealand 2003) ISBN 1-877246-95-6

[[Category:Carangidae]]
[[Category:Decapterus]]
[[Category:Decapterus]]
[[Category:Endemic marine fish of New Zealand]]
[[Category:Endemic marine fish of New Zealand]]
[[Category:Fish of the North Island]]
[[Category:Fish described in 1875]]



{{Carangiformes-stub}}
[[ca:Decapterus koheru]]

Latest revision as of 16:21, 7 November 2024

Koheru
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Carangiformes
Family: Carangidae
Genus: Decapterus
Species:
D. koheru
Binomial name
Decapterus koheru
(Hector, 1875)
Synonyms[2]

Caranx koheru Hector, 1875

The koheru (Decapterus koheru) is a ray-finned fish of the genus Decapterus, part of the family Carangidae.[2] It is endemic to New Zealand where it occurs from Manawatāwhi / Three Kings Islands to southern North Island. This is a schooling, pelagic species of coastal waters where it is found within shallow bays, harbours, estuaries and near rocky reefs and offshore islands at depths of between 2 and 90 metres (6.6 and 295.3 ft). Juveniles prefer rocky inshore areas, while adults are known to form dense schools in offshore waters. The maximum fork length is 40.3 centimetres (15.9 in). They live to around 10 years and juveniles growth quickly, attaining a fork length of 37 centimetres (15 in) by the time they are three years old.[1] They feed on zooplankton.[2] It is a species of minor interest to commercial fisheries but is taken by recreational anglers.[1]

References

[edit]
  1. ^ a b c Smith-Vaniz, W.F.; Carpenter, K.E.; Larson, H.; Matsuura, K.; Motomura, H. (2018). "Decapterus koheru". IUCN Red List of Threatened Species. 2018: e.T20431506A67871580. doi:10.2305/IUCN.UK.2018-2.RLTS.T20431506A67871580.en. Retrieved 19 November 2021.
  2. ^ a b c Froese, Rainer; Pauly, Daniel (eds.). "Decapterus koheru". FishBase. August 2019 version.