{"id":1647,"date":"2014-05-18T11:26:45","date_gmt":"2014-05-18T11:26:45","guid":{"rendered":"http:\/\/www.123fakta.com\/da\/?p=1647"},"modified":"2026-03-19T10:38:27","modified_gmt":"2026-03-19T10:38:27","slug":"fakta-om-gullfisk","status":"publish","type":"post","link":"https:\/\/www.123fakta.com\/nb\/facts-about-goldfish","title":{"rendered":"Fakta om gullfisk"},"content":{"rendered":"<ol>\n<li><strong>\u00c5pne \u00f8ynene:<\/strong>\u00a0Gullfisk kan ikke lukke \u00f8ynene fordi de ikke har \u00f8yelokk.<\/li>\n<li><strong>Farge:<\/strong>\u00a0Hvis du holder en gullfisk i et m\u00f8rkt rom, vil den miste fargene sine. P\u00e5 samme m\u00e5te vil gullfisk som lever utend\u00f8rs, vanligvis v\u00e6re mer fargerike enn gullfisk som lever innend\u00f8rs (fordi de f\u00e5r mer dagslys).<\/li>\n<li><strong>Minne:<\/strong> Gullfisk kan huske i minst 3 m\u00e5neder; ikke de beryktede 2-3 sekundene de er beryktet for (du kan lese mer om gullfiskens hukommelse i siste avsnitt p\u00e5 denne siden).<\/li>\n<li class=\"no-mobile\"><strong>Etterretning:<\/strong>\u00a0Gullfisk kan skille mellom ulike former, farger og lyder, og kan trenes opp til \u00e5 gjenkjenne og reagere p\u00e5 visse lyssignaler. De kan til og med l\u00e6re seg triks<\/li>\n<li><strong>Urin:<\/strong>\u00a0Gullfisk (og andre fisk) urinerer ikke slik pattedyr gj\u00f8r. I stedet skiller de ut ammoniakk i vannet gjennom gjellene.<\/li>\n<li><strong>Sikt:<\/strong>\u00a0Gullfisk kan se infrar\u00f8d str\u00e5ling og ultrafiolett lys (noe mennesker og de fleste andre dyr ikke kan).<\/li>\n<li><strong>Ingen mage:<\/strong>\u00a0Gullfisk har ingen mage og b\u00f8r derfor heller f\u00e5 flere sm\u00e5 porsjoner enn \u00e9n stor.<\/li>\n<li><strong>Den eldste gullfisken:<\/strong>\u00a0Verdens eldste gullfisk ble 45 \u00e5r gammel og d\u00f8de i 2005. Fisken bodde hos familien Evans i Bradninch, Devon i Storbritannia, og ble vunnet p\u00e5 et marked i 1960.<\/li>\n<li><strong>Kaldt vann:<\/strong>\u00a0Gullfisk senker stoffskiftet betydelig i kaldt vann, noe som gj\u00f8r at de n\u00e6rmest g\u00e5r i dvale. Det betyr blant annet at de kan overleve i sv\u00e6rt lave vanntemperaturer (ogs\u00e5 i innsj\u00f8er som har v\u00e6rt frosset til over vinteren).<\/li>\n<li><strong>St\u00f8rrelse:<\/strong>\u00a0Gullfiskens vekst hemmes i stor grad av at akvariet er for lite, at den f\u00f4res feil og at vannkvaliteten er d\u00e5rlig. Derfor kan gullfisken bli mye st\u00f8rre enn vi er vant til; verdens lengste gullfisk er 47,4 cm lang og bor hos eieren Joris Gijsbers i Nederland.<\/li>\n<\/ol>\n<figure id=\"attachment_7520\" aria-describedby=\"caption-attachment-7520\" style=\"width: 990px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-7520 size-full\" src=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-fakta-2.jpg\" alt=\"Fakta: &quot;Bubble eye&quot; (Carassius auratus auratus auratus) er bare \u00e9n av mange avlede gullfiskarter.\" width=\"1000\" height=\"750\" srcset=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-fakta-2.jpg 1000w, https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-fakta-2-300x225.jpg 300w, https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-fakta-2-768x576.jpg 768w, https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-fakta-2-16x12.jpg 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-7520\" class=\"wp-caption-text\">Attribusjon: Angie Torres - Wikipedia.org<\/figcaption><\/figure>\n<p style=\"text-align: center;\"><em><strong>Fakta: Det finnes mer enn 300 avlsarter av gullfisk, hvorav de aller fleste stammer fra Kina. Bildet viser \"boble\u00f8ye\" (Carassius auratus auratus auratus auratus).<\/strong><\/em><\/p>\n<h2>Mer fakta om gullfisk<\/h2>\n<ul>\n<li><strong>Historie som kj\u00e6ledyr:<\/strong>\u00a0Gullfisk ble opprinnelig holdt som kj\u00e6ledyr i gamle kinesiske dynastier. Det var ikke f\u00f8r tidlig p\u00e5 1500-tallet at de ble popul\u00e6re utenfor Kina. I 1603 kom de til Japan, i 1611 til Europa og rundt 1850 til USA (det var f\u00f8rst i 1853 at vannfiltrering i akvarier ble oppdaget, noe som gjorde det mulig \u00e5 holde fisk i akvarier innend\u00f8rs). Gullfisk har alts\u00e5 v\u00e6rt holdt som kj\u00e6ledyr i minst 2000 \u00e5r!<\/li>\n<li><strong>Mat:<\/strong>\u00a0Gullfisk er altetende og spiser planter, insekter, sm\u00e5 leddyr og enda mindre dyr. <a href=\"https:\/\/www.123fakta.com\/nb\/fakta-om-fisk\/\">fisk<\/a><\/li>\n<li><strong>Ber\u00f8ring:<\/strong>\u00a0Ta aldri p\u00e5 en gullfisk, da dette kan skade slimhinnen som naturlig beskytter skjellene mot infeksjoner.<\/li>\n<li><strong>Lyder og st\u00f8y:<\/strong>\u00a0Gullfisk har h\u00f8rsel og blir stresset av h\u00f8ye lyder og vibrasjoner i vannet. Det er derfor ikke anbefalt \u00e5 banke med fingrene p\u00e5 akvariet (eller generelt lage lyd) for \u00e5 aktivere gullfisken i akvariet.<\/li>\n<li><strong>Overlevelse:<\/strong>\u00a0Selv om mange gullfisk d\u00f8r relativt raskt p\u00e5 grunn av feil stell og h\u00e5ndtering fra eiernes side, er gullfisk i stand til \u00e5 overleve under relativt d\u00e5rlige levek\u00e5r. Et eksempel p\u00e5 dette er gullfisken Smokey, som i 2013 ble funnet i live i et hus som hadde brent ned i 2011 i Essex i Storbritannia. Gullfisken hadde overlevd i noen f\u00e5 centimeter vann i en liten tildekket hagedam uten tilgang til ferskvann, mat eller dagslys i to \u00e5r.<\/li>\n<\/ul>\n<figure id=\"attachment_7521\" aria-describedby=\"caption-attachment-7521\" style=\"width: 990px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7521\" src=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-oranda-2.jpg\" alt=\"Fakta: Gullfisk kan v\u00e6re st\u00f8rre enn de fleste tror.\" width=\"1000\" height=\"667\" srcset=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-oranda-2.jpg 1000w, https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-oranda-2-300x200.jpg 300w, https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-oranda-2-768x512.jpg 768w, https:\/\/www.123fakta.com\/wp-content\/uploads\/guldfisk-oranda-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-7521\" class=\"wp-caption-text\">Attribusjon: Michelle Jo - Wikipedia.org<\/figcaption><\/figure>\n<p style=\"text-align: center;\"><em><strong>Gullfisk kan bli st\u00f8rre enn de fleste tror. Den st\u00f8rste gullfisken i dag er 47,4 cm lang og lever i Nederland. Bildet viser en stor Oranda-gullfisk fra England.<\/strong><\/em><\/p>\n<h2>Hvem er gullfiskens fiender?<\/h2>\n<p>Gullfisk har en rekke naturlige fiender og trusler, b\u00e5de i naturen og i hjemmeakvarier:<\/p>\n<ul>\n<li><strong>Rovfisk<\/strong>: St\u00f8rre fisk, som koi, steinbit og enkelte ciklidearter, kan angripe og spise gullfisk, spesielt hvis de holdes i samme dam eller akvarium.<\/li>\n<li><strong>Fugler<\/strong>: Fugler som hegre, isfugler og m\u00e5ker jakter ofte p\u00e5 gullfisk, spesielt i utend\u00f8rs dammer.<\/li>\n<li><strong>Pattedyr<\/strong>: Vaskebj\u00f8rn, oter og til og med noen huskatter kan utgj\u00f8re en trussel mot gullfisk i utend\u00f8rs vannspeil.<\/li>\n<li><strong>Amfibier<\/strong>: Store frosker og padder kan pr\u00f8ve \u00e5 spise mindre gullfisk, spesielt hvis fisken lever i en dam.<\/li>\n<li><strong>Parasitter og sykdommer<\/strong>: Gullfisk er utsatt for ulike parasitter (som ich eller ankerorm) og sykdommer (som finner\u00e5te og sv\u00f8mmebl\u00e6resyke) som kan skade eller drepe dem.<\/li>\n<li><strong>Menneskelige faktorer<\/strong>: D\u00e5rlig vannkvalitet, overf\u00f4ring og feil vedlikehold av tanken kan ogs\u00e5 v\u00e6re fiender av gullfisk i fangenskap, noe som kan f\u00f8re til stress og helseproblemer.<\/li>\n<\/ul>\n<p>Hver av disse faktorene utgj\u00f8r en betydelig trussel mot gullfiskens helse og velv\u00e6re i ulike milj\u00f8er.<\/p>\n<h2>Fakta om gullfiskens hukommelse<\/h2>\n<p>En popul\u00e6r oppfatning er at gullfisk har en hukommelse p\u00e5 bare tre sekunder. Denne myten har f\u00e5tt stor utbredelse i popul\u00e6rkulturen, noe som har f\u00e5tt folk til \u00e5 tro at disse sm\u00e5 vannlevende skapningene har ekstremt kort oppmerksomhetsspenn. Vitenskapelige studier har imidlertid vist at dette ikke er tilfelle.<\/p>\n<p>Gullfisk er mye mer intelligente enn de ser ut til, med en hukommelse som kan vare i flere m\u00e5neder, ikke sekunder. Forskning har vist at gullfisk kan l\u00e6re og huske informasjon over lange perioder. I eksperimenter har de blitt trent opp til \u00e5 assosiere bestemte lyder eller farger med f\u00f4ringstider, og det har vist seg at de husker disse signalene lenge etter den f\u00f8rste treningsperioden.<\/p>\n<p>Faktisk har gullfisk vist evner som \u00e5 gjenkjenne eierne sine og huske ruter i komplekse labyrinter. Disse kognitive evnene vitner om gullfiskens overraskende intelligens og l\u00e6ringsevne.<\/p>\n<p>S\u00e5 selv om myten om tre sekunders hukommelse lever i beste velg\u00e5ende, viser vitenskapen at gullfisk er mye dyktigere enn man vanligvis tror.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u00c5pne \u00f8yne: Gullfisk kan ikke lukke \u00f8ynene fordi de ikke har \u00f8yelokk Farge: Hvis du holder en gullfisk i et m\u00f8rkt rom, vil den miste fargen. P\u00e5 samme m\u00e5te vil gullfisk som lever utend\u00f8rs vanligvis v\u00e6re mer fargerike enn gullfisk som lever innend\u00f8rs (fordi de f\u00e5r mer dagslys) Hukommelse: Gullfisk kan huske i minst 3 m\u00e5neder; ikke ... <a title=\"Fakta om gullfisk\" class=\"read-more\" href=\"https:\/\/www.123fakta.com\/nb\/facts-about-goldfish\" aria-label=\"Les mer om fakta om gullfisk\">Les mer<\/a><\/p>","protected":false},"author":1,"featured_media":7522,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"cybocfi_hide_featured_image":"","footnotes":""},"categories":[67,74],"tags":[120],"class_list":["post-1647","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-animals","category-aquatic-animals","tag-adsense"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Goldfish - 16 fun facts about goldfish<\/title>\n<meta name=\"description\" content=\"Fact: Goldfish have a memory of at least 3 months. 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