Some bettas won t eat at all when stressed by too much light.
Betta fish light at night.
You should aim to give your betta 8 12 hours of light and 12 16 hours of dark per day.
Betta fish typically need 8 to 12 hours of light and 12 to 16 of darkness so make turning off your tank light a pre bedtime habit.
Everything you want to know will be answered in this video.
Your betta has a day night cycle it follows just like you.
Are you wondering whether you should leave your betta fish light on or off at night.
You ll see this stress play out in feeding habits mostly.
If your betta fish has too much light it can become overly stimulated and stressed.
If you notice your betta is acting in an aggressive manner when the light is on then it could be because he is seeing his own reflection.