To extend betta fish longevity by 6 months to a year, I recommend keeping the betta fish temperature range below 75°, but no lower than 70°. Start out at 75° and lower the temperature 1 degree at a time using an adjustable thermostat 20-gallon aquarium heater.
How cold is too cold for a betta fish?
Their ideal temperature is between 78-80°F. However, they can survive in temperatures as warm as 85°F and as cold as 76°F. Below 74°F is when you’ll begin to notice the effects of temperature shock affecting your betta rapidly, and above 86°F he’ll begin slowly roasting to death in the water.
Is 80 degrees too hot for betta fish?
Yes, 80–85 F is perfect for Bettas. Preferably keep them from going cooler than 75. They can take cooler temperatures for a while but become sluggish and may stop eating. Cooling an aquarium is more difficult than heating one.
Do bettas like light?
Bettas like light so that they know when to wake up and prefer a darker environment to sleep in. You may have an aquarium light on your tank and if so, it is probably best for you to turn this on when you wake up in the morning and turn it off just before bedtime.