This is not to say that captive bred fish are weaker than wild caught fish in fact, you will often have an easier time keeping captive bred fish than wild caught fish. Over the years, through breeding fish in captivity and keeping them with this technology, many captive bred fish have become reliant on extremely stable temps and have actually become weaker against temperature change. However, in an aquarium, the temperature is kept very stable with an aquarium heater and fluctuates very little.Īs a result of this constant maintained temperature day and night all year, the fish can get used to a certain temperature.
However, in a place like Peru, it rarely gets below 14C / 57F, which is the coldest most tropical fish can withstand before adverse health effects occur.ĭue to this fluctuation, fish are adapted to deal with temperature changes all the time and it is in their nature to undergo variation in their habitat. For most tropical climates, there is the rain season and the dry season.
For those temperate areas, we will be used to the typical spring, summer, autumn and winter. Temperatures can jump 10 degrees in some areas, even in tropical climates.Įvery climate also has a series of warmer and cooler months. In nature, temperatures fluctuate all the time, day and night. Temperature in the wild vs in a fish tank
#Heater temperature for goldfish install#
If you normally run without heaters however, then it may be a good idea to install some or switch them on during autumn and winter to prevent it from getting too cold for your tropical fish. If you have a heater in your tank running normally, there is no need to change it when winter arrives the heater will work to maintain the temperature it is set to.Ī glass heater will still bring your tank to the right temperature despite how cold it gets outside, accepting that it is the correct size for your tank’s litrage. Do you need to increase the temperature in a fish tank over winter?
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