Shortjaw kōkopu: Difference between revisions
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{{for|the general article about kokopu|kokopu}} |
{{for|the general article about kokopu|kokopu}} |
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{{Speciesbox |
{{Speciesbox |
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| name = Shortjaw |
| name = Shortjaw kōkopu |
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| image = Shortjaw kokopu photographed in Huia, Auckland.jpg |
| image = Shortjaw kokopu photographed in Huia, Auckland.jpg |
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| image_caption = Adult shortjaw |
| image_caption = Adult shortjaw kōkopu |
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| image2 = Adult shortjaw kokopu (Galaxias postvectis), Heao Stream, Waitaanga Forest. Photo by Stella McQueen.jpg |
| image2 = Adult shortjaw kokopu (Galaxias postvectis), Heao Stream, Waitaanga Forest. Photo by Stella McQueen.jpg |
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| image2_caption = Some adult shortjaw |
| image2_caption = Some adult shortjaw kōkopu are quite orange |
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| status = EN |
| status = EN |
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| status_system = IUCN3.1 |
| status_system = IUCN3.1 |
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Revision as of 05:20, 15 July 2021
| Shortjaw kōkopu | |
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| Adult shortjaw kōkopu | |
,_Heao_Stream,_Waitaanga_Forest._Photo_by_Stella_McQueen.jpg)
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| Some adult shortjaw kōkopu are quite orange | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Galaxiiformes |
| Family: | Galaxiidae |
| Genus: | Galaxias |
| Species: | G. postvectis
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| Binomial name | |
| Galaxias postvectis F. E. Clarke, 1899
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The shortjaw kōkopu (Galaxias postvectis) is a galaxiid fish, endemic to New Zealand.[2] They are large, scaleless fish which inhabit stable pools in cascading, bouldery streams with forest cover.[3] Shortjaw kōkopu are amphidromous, with the fry going to sea after hatching, and returning as juveniles to fresh water where they grow to adulthood.[3] They may grow to a maximum of 350 mm (14 in) in total length, but more commonly reach 150–200 mm (5.9–7.9 in).[3]
The shortjaw kōkopu live in microhabitats that have more large particles at the bed of the body of water (substrates) and more places to seek safety compared to all nearby possible habitats.[4] During the night, they remain in calmer areas like pools, whereas during the day shortjaw kōkopu spend their time in places with large substrates and a more tumultuous water surface, staying in both flow channel and pool habits.
References
- ^ "Galaxias postvectis". IUCN Red List of Threatened Species. Retrieved 8 August 2015.
- ^ "Shortjaw kōkopu". NIWA. 2009-06-04. Retrieved 2021-07-15.
- ^ a b c McDowall, R.M. (2000). The Reed Field Guide to New Zealand Freshwater Fishes. Auckland: Reed. ISBN 0 7900 0725 8.
- ^ McQueen, Stella (2013). A photographic guide to freshwater fishes of New Zealand. Rod Morris. Auckland. ISBN 978-1-86966-386-5. OCLC 858411018.
{{cite book}}: CS1 maint: location missing publisher (link)
- Froese, Rainer; Pauly, Daniel (eds.) (2006). "Galaxias postvectis" in FishBase. March 2006 version.
- NIWA Fish Atlas - Shortjaw Kokopu June 2006
- [1]
External links
- New Zealand native freshwater galaxiid fish, Shortjaw kokopu TerraNature, Auckland 2010
 | This Osmeriformes-related article is a stub. You can help Wikipedia by expanding it. |
- ^ McEwan, AJ. "Diel habitat use of two sympatric galaxiid fishes (Galaxias brevipinnis and G-postvectis) at two spatial scales in a small upland stream in Manawatu, New Zealand". Web of Science. SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA.