Water temperature is the primary factor necessary for aquatic organisms to sustain life. Changes in temperature will cause a series of changes in all environmental factors, which directly affect the survival of aquatic organisms. In addition to the impact of water temperature on environmental factors, it also has a significant impact on aquatic organisms themselves. The body temperature of fish in the ocean, especially coral reef fish, soft bodies, etc. changes with water temperature. The difference between the temperature of the surrounding water and the surrounding water is only 0.1℃～1℃, which means that they are organisms that change temperature. When the water temperature changes, various enzymes, lipids, heme and trace elements in the fish will change accordingly. If the speed and range of water temperature changes exceed the tolerance of various physiology in the organism, the organism suffers damage. Some of these injuries may be irrecoverable, and severe ones will cause the creature to die.

The vast majority of marine aquarium fish, including corals, sea anemones and other molluscs, belong to tropical narrow temperature organism. They can adapt to a very narrow range of temperature changes, so the changes in the seawater temperature in the aquarium must be strictly controlled during breeding. Ensure the most suitable temperature range: 26℃±1℃.