Therefore, many fish friends like it, especially some small tropical fish are very popular with friends who have just started fish farming, and some fish friends who believe in Feng Shui are very keen on arowana and other species. These fish have the same characteristics, that is, they require higher temperature. Generally, suitable survival can make the water reach the natural environmental temperature of tropical fish, create an artificial tropical environment, and make the fish grow healthier.
So you don't need a heating rod, depending on the local water temperature and climate. If you are in the tropics, of course, you don't need a heating rod. If you are in the south of the subtropical zone with a high climate, tropical fish have certain requirements on temperature. If there is heating in the house in winter. You can press tropical fish without heating rods. If there is no heating, it must be heated, otherwise the tropical fish can freeze to death at a temperature of about 5 degrees. Your normal active temperature is 25 to 3 degrees. Tropical fish and ornamental fish unique to subtropical fish are called tropical fish in the tropical zone that can be raised. Tropical fish have high requirements for water temperature.
The water temperature should be controlled at 25 degrees Celsius. Too low water temperature will affect the activity and food intake of tropical fish. If there are obstacles in food intake and swimming, tropical fish may die slowly. As long as it is tropical fish, it must be heated in winter. However, there are some ornamental fish that don't need to be heated at present. They are mullet, white cloud snakehead and forktail fighting fish, as well as Chinese sturgeon and paddlefish. Myxocyprinus asiaticus, Chinese sturgeon and juvenile paddlefish are kept in fish tanks by fish friends in front of ornamental fish. Of course, heating rods are not needed in summer!
But heating rods are necessary in winter. According to my experience, guppies are relatively cold-resistant! But it needs to be heated in winter! If the landlord wants to raise small fish and doesn't want to use heating rods, he can raise small cold-water fish. There are only a few kinds of tropical fish that don't need heating rods, that is, the low-temperature fish that everyone likes. This fish is not lower than 1 degrees, and it can basically survive. In winter, everyone keeps the normal water temperature indoors without heating, and these fish are all right, and they are the fish that novices practice.