at 30 degrees? Cold-water fish can adapt to 30 degrees in a short time, but they will die after a long time. Cold-water fish has two meanings, one is divided according to the living environment, fish inhabiting in waters below 20 degrees Celsius are cold-water fish, the other is ornamental fish other than tropical fish, they have stronger adaptability to temperature, not only can live in waters with low temperature, but also can adapt to the environment with slightly higher temperature.
1, change water: raise cold water fish must change water. The purpose of changing water is to maintain water quality. Although the water looks clear, if it is not changed for a long time, there will be a lot of ammonia nitrogen in the water, which will be harmful to the health of fish. At the same time, changing water can also control the growth of algae and prevent the occurrence of algae explosion.
2. Feeding: In order to ensure the growth of cold-water fish, it is generally necessary to feed them three times a day. The feeding time is mostly during the day, from 9 a.m. to 4 p.m., when the temperature is higher, the fish's appetite is stronger, it is easier to eat, and it is easier to digest.
3. Oxygenation: Cold-water fish also have certain requirements for dissolved oxygen in the water body, especially for larger fish, if the oxygen content is very low, the fish is easy to be raised anoxic. Therefore, it is better to prepare an oxygen pump for 24 hours without interruption to ensure that the dissolved oxygen in the water is sufficient.
