![]() ![]() In this study, the ultimate CTMax for Goldfish was found to be 43.6 ☌. The CTM endpoint is a temperature at which the fish starts making disorganized (locomotory) movements and loses the capability of leaving the conditions that can lead to death. This stage is termed as CTM endpoint (CTMax or CTMin). In this procedure, the fish are given a constant, continuous, and linear raise or reduction in temperature until a near-lethal but sub-lethal stage arrives. The Critical Thermal Methodology (CTM) has been used to measure the temperature tolerance of various fish species. And the critical thermal methodology was used in this process. Researchers studied the temperature tolerance of goldfish at constant acclimation temperatures of 5, 15, 25, and 35 degrees celsius. Then, they were placed in aquaria filled with dechlorinated Denton Tap water.Īll the fish were fed with Tetra-Min flake food every day. įirst, the goldfish were collected from Pet Stores in North Texas. Goldfish Can Even Withstand Near 0☌ TemperatureĪ study was done (about the temperature tolerance in goldfish) in which researchers calculated the lower and upper temperature of 240 goldfish. ![]() ![]() So unless your tank water temperature remains way below that range, you will not need a heater, in general. The ideal temperature for goldfish in a tank is 68 ☏ – 74☏ (20☌ – 23☌). Read on till the end as I share more on what temperature goldfish need, a scientific study on temperature tolerance of goldfish, and more to help you decide what will be best for you. However, adding a water heater is important, especially if you have fancy goldfish and want to maintain a stable temperature. Generally, goldfish are cold water species, so it is not necessary to have heaters for them. When keeping goldfish, a time comes when you start wondering whether they really need a heater or not. ![]()
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