Ideal Water Temperature Range and Scientific Management Tips for Chinese Betta Fish
I. Ideal Temperature Range
Regular rearing temperature
The optimal range is 24–28°C, with 25–26°C being the "golden temperature"—it keeps the fish metabolically active and their colors vibrant.
Temperatures below 20°C will reduce their appetite and make them inactive; above 30°C, they’re prone to oxygen deprivation and tail rot.
Special breeding period requirements
The temperature must be stabilized at 26–28°C. If it drops below 24°C, male fish will refuse to build nests, and hatching rates will plummet by 50%.
II. Temperature Control Key Points by Growth Stage
Juvenile stage
Strictly maintain a constant temperature of 26°C ± 1°C. Excessive temperature fluctuations can cause spinal deformities.
Adult stage
Adults tolerate a slightly wider range (22–28°C), but in winter, the temperature must not drop below 22°C to prevent enteritis.
III. Seasonal Management Tips
Cooling in summer
When temperatures exceed 30°C, use fans or ice packs to cool the water, and avoid direct sunlight.
Insulation in winter
If the water temperature drops below 22°C, use a heater to prevent the bettas from entering a dormant state.
IV. Equipment Recommendations
Use a heater + thermometer for dual monitoring to ensure temperature fluctuations stay within 3°C.
During the breeding period, a temperature alarm is recommended to avoid the impact of day-night temperature differences.