Adapting to a New Environment: Place the betta fish in a dark place and let it adapt to the new environment. Keep the water quality stable during this period.
Adjusting the Water Temperature: Use a heater to adjust the water temperature to between 20 - 28°C and ensure that the water temperature remains constant.
Improving the Water Quality: Change the water regularly. Use a filter pump to keep the water clean. You can also add Indian almond leaves to improve the water quality.
Changing the Feed: Try using different kinds of feed or live baits, such as bloodworms, nematodes, etc., to boost the betta fish's appetite.
Treating Diseases: If the betta fish gets sick, isolate it for treatment in a timely manner. Replace part of the water and add some coarse salt and medicine. Observe the changes in its condition.