A change in the environment is definitely one reason that can cause your fish to feel stressed or anxious. If you don’t regularly clean your fish tank, dirt could build up inside and it could be detrimental to the health of your fish. And when you decide to change the water all of a sudden after not doing it for a long time, then you can expect your fish to get extremely stressed out because of the sudden change in its environment.
Changes in overall weather conditions could also cause the stressful behavior. During winter, your fish is doing all that it can to maintain its internal body temperature and if you’ve normally relied on your heating system for warmth and that heating system breaks down, expect your fish to behave in an odd behavior for some time, before it once again adjusts to new temperatures inside your home. To monitor water temperature, get an aquarium thermometer from Waggles Pet Emporium. The thermometer displays both the Celsius and Fahrenheit scale so you can always check whether water conditions are right for your fish.