Lighting is not essential for betta fish since they can live without an overhead light in an aquarium, but still, its a question: Do betta fish need light? However, they cannot live actively in a dim room or in complete darkness. Furthermore, light is necessary because they survive with live plants, so both need it to grow.
It is vital for their mental and physical health. Betta fish expects nighttime. Thus it needs to close the light. But, it is not possible to keep them without light 24/7. They need it 14-16 hours in 24 hours.
So, you must monitor it and attach a timer for the aquarium or plug a socket to control the light. Ensure they get 8-10 hours of darkness in the evening.
Do betta fish need light? What Is The Primary Reason?

Betta Fish do not require a lot of light. However, they live in canals, streams, rice paddies, and other murky waters. These waters do not give much natural light since sun rays cannot go underwater due to debris and other conditions. Moreover, falling leaves are the hurdles in the way of the rays.
Thus, betta fish used to live in low-light conditions. But they still require light to stay healthy, happy, and grow better.
Moreover, light is helpful for them to avoid predators and identify food. The rays on the surface guide them to hide from predators. However, there is no predator threat in the tank.
In the tank, they take help from light to identify their food. You must avoid sunlight from entering the tank directly since it increases the water temperature and can harm their lives.
Moreover, sunrays can increase the growth of fungi that needs to be cleaned because they cannot live in dirty habitat. On the other hand, the light assists them in regulating their sleeping pattern, which keeps them out of stress. Due to all these reasons, we can say that betta fish need light.
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Do betta fish like light?

Yes, they do, since their region is tropical Thailand, with a lot of sunlight. You must provide sufficient light in their habitat to keep your betta fish out of stress.
They need it to maintain their schedule where they have regular dark and light periods so they can manage their normal sleeping pattern.
Betta fish like light because it alarms them that it is time to wake up since they choose a darker environment for rest. You must fix an aquarium light on your tank to create a day environment for them.
It is good to turn on the light in the morning and turn it off before sleep. It provides a regular pattern for sleeping with your betta fish. Some lights have an automatic timer for the tanks, so you will find it easy to manage.
Do betta fish need artificial or natural light?

The light requirement for betta fish in the tank is 12 to 14 hours daily. They need it to regulate their sleeping schedule. Moreover, it is good for them to detect food and other activities, such as playtime.
Sunlight is not recommended for them due to some negative effects. However there are many benefits of natural light, but it is not for the fish tank. The sun’s rays increase the water temperature, which can be a problem for fish. Furthermore, it increases the algae growth in the water tank, and betta will suffer from it.
Artificial light is easy to manage because it offers a reliable and stable daylight source. You can place LEDs and bulbs with a timer. They provide enough light on cloudy and rainy days even. These lights can help them regulate their sleeping patterns, and you can use them to provide a natural habitat.
Do betta fish need light at night?

No, they do not need it. Like other species, betta fish need light and darkness. It is good for their healthy growth to keep them happy as well. Fish do not sleep during the day, and they rest in the darkness since they use light to detect their food and their activities and hide from predators.
In the darkness, they cannot perform their tasks. So, they take a rest and conserve their energy when darkness hits.
Darkness is important for the betta and fish because it alarms them to sleep. It is important to keep them out of stress. They do not need light 24/7, so you must maintain darkness for 8-10 hours.
To keep your betta fish calm and active, you must maintain their sleeping pattern. It is possible when you turn off the lights at night.
How long should lights be on for betta?
Betta Fish are not much different from other species, so they need a natural environment to live and grow in the tank. Therefore, it is important to provide them with enough brightness.
However, too much light is harmful since they cannot rest, making them stressed.
Conclusion
We end this discussion here with the conclusion that betta needs light as the other species need. No need to worry about natural and artificial light because they do not care.
Moreover, you can fix simple lights on the tank without color since they do not have color vision. Thus, colored light does not matter to Betta fish. However, they like dim to bright lights in their tank.
The brighter lights can harm their eyes, and dimmer to brighter can bring them closer to their natural environment.
LED or Fluorescent is the best artificial light for their tank. They will not be harsh on their eyes.
Betta fish do need light to live. However, they require it to thrive. In the tank, they can stop eating and become lethargic without light since it is their indicator to perform activities.
The lights let them feel that it is daytime and can be a hurdle for them to sleep or rest. Your light source can be natural or artificial as long as you evade direct light that will give temperature shock to fish by heating up water.
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