Hej igen,
Vanliga guld fiskar tål allt mellan en damm med ett lager is till upp till 32 grader. Men de Slöjstjärtar jag kommit i kontakt med verkar må bäst vid 24-26grader.
74 - 78F= 23.34 - 25.55C Detta är minimum rekommedationen.
http://koivet.com/html/articles/articles_details.php?article_id=150&category=16&name=Goldfish%20Information
Temperature to Keep Goldfish
Many Goldfish keepers are unaware that the highly selected Asian carps are better suited for warmer waters. Ranchus, Orandas, Bubble eyes, etc all do better in heated systems, e.g. 74-78 degrees at a minimum, which *might* mandate a heater, especially during the winter.
The problems you can encounter with Goldfish kept too cool include: Increased susceptibility to bacterial infection, increased incidence of irreconcilable Dropsey or floater diseases; where the fish floats helplessly at an unusual angle, even upside-down! As well, the filter bacteria in cooler systems do not function well, and ammonia problems may result. All in all, you will only enhance th health of the fish and the function of the aquarium when you heat it up, as I said, 74 degrees minimum.
Bilder på:
http://www.ap-goldfish.com/gold.html
http://www.goldfishfarm.com/Gold_Fish/Page_1x.html
Andra siter om guldfisk:
http://puregold.aquaria.net
http://www.goldfishconnection.com/
http://www.petlibrary.com/goldfish/goldfish.html
http://www.koivet.com/
http://www.fishdoc.co.uk
http://www.goldfishguy.com/
http://www.geocities.com/ybhari/
http://members.tripod.com/r_ahlquist/
Mvh,
cri