Goldfish Water Temperature

Goldfish are considered cold-water fish, but although they can survive a wide range of temperatures, that does not mean they are happy or healthy in cold water. Goldfish can survive temperatures from forty degrees to one hundred six degrees, but the extremes will kill the goldfish if thGoldfish Tanke exposure lasts too long. The best temperature range for most Goldfish is sixty-eight to seventy-five degrees, and some breeds prefer even warmer temperatures. So, what is the ideal Goldfish water temperature for you?

Goldfish are exothermic, like all fish. Their body temperature is determined by the temperature of the water.  This means that goldfish are at the mercy of the water temperature to regulate critical body functions.
Simple functions such as locomotion are affected by water temperature. Goldfish in cool ponds move more slowly than goldfish in very warm ponds. Fancy goldfish in water that is 50 degrees Fahrenheit, are almost catatonic. Their metabolic processes such as digestion, respiration and immune response, are directly tied to the Goldfish water temperature.

Sudden changes of temperature can kill the fish, even within the ranges mentioned, so it’s important to spend some time, twenty minutes or so, immersing their bag to equalize the temperatures. In situations such as purchasing a goldfish in a store at seventy degrees, to place it in a pond outdoors, with a temperature of forty, it may take days or weeks of careful preparation to avoid a high chance of death.

If the water is too cold, there are various heaters and thermostats available for aquariums. Also thermometers which can be read easily. These heaters all work with electricity pushed through a resistor, producing heat. This tends to require a surprising amount of electricity. There are times when it makes sense to have more and cheaper elements and times when fewer, more expensive elements are a better option.

When the water is about 80 degrees Fahrenheit, it is not good for goldfish because dissolved oxygen levels may drop too low. You can cool the

tank slightly by setting up a fan to blow across the open tank surface to create evaporative cooling.
Goldfish enjoy live vegetation. They like to pull plants out of the bottom of the tank, so choose plants capable of withstanding this stress. Some breeds of goldfish are vulnerable to sharp edges due to their long, flowing fins or fleshy parts which obscure vision. Be careful and make sure you have the correct mix of natural and artificial plants and fish.

Goldfish have a great need for oxygen content and thrive in tanks with a large surface area, so a long, wide tank is better than a deep one.  A large surface area allows the oxygen from the atmosphere to migrate into the water.

Also important is the water quality of the tank.  You can add a teaspoon of kosher or sea salt for each five gallons of water. Water must be cleaned regularly. Waste products from the fish might poison them by raising the nitrogen content. When feeding your goldfish, remove the food they haven’t eaten after a couple of minutes to avoid bacterial growth.

With all this in mind, we can understand that keeping the traditional goldfish in a fishbowl, is not such a good idea.