Do Betta Fish Like the Light On? Shedding Some Illumination! (2024)

Do Betta Fish Like the Light? Betta Fish, also known as Siamese fighting fish, are incredibly perceptive to light and can take pleasure in it. To remain vigorous and flourish in their natural environment, Betta Fish usually spend a large portion of their time in shallow and sunlit waters, so it’s wise to give them a comparable environment with plenty of natural light when kept in captivity.

So to sum it up, YES- Betta fish need Light to thrive, but you need to properly know just how much light is best for them. In this article, we’ll be going over the best aquarium lights for your fish, detailing how much light and dark they need as well as what happens when they don’t get sufficient light.

Introduction – Do Betta Fish Like the Light?

Betta fish, also known as Siamese fighting fish, are a beloved type of freshwater fish known for their captivating hues and individual temperaments. One pressing inquiry that many Betta fish owners ask is whether these fish favor light or darkness, just how good does Betta Aquarium light need to be?

Introduction - Do Betta Fish Like the Light?

This has caused a lot of discussion between specialists and enthusiasts alike, with some asserting that Betta fish need light to thrive. In contrast, others think that an excessive amount of light can be damaging to these delicate fish. This article will analyze the evidence and offer a comprehensive review of whether Betta fish prefer Betta tank light or darkness.

Do Betta Fish Need Light?

  • Betta Fish Need Light

Every Betta Fish species needs illumination to have a healthy life. Light is indispensable for the Fish to be able to view things and build their daily patterns. Without it, they can become sluggish, face health-related issues, and be disoriented. To keep them vigorous and alert, Betta Fish should be exposed to a 10-12 hours light source daily.

Do Betta Fish Need Light

If you are raising Betta Fish to live at home, it is significant to fit the tank with specific LED lights or full-spectrum fluorescent bulbs. These lights must be appropriately positioned and not placed too near the water level to stop any harm or burning. You can also keep live or false plants in the tank to provide natural dimness and give hiding spots for your Betta fish.

Top 10 Aquarium Light Brands For Betta Fish Tank

Here are 10 of the best aquarium light brands, along with a  brief explanation of what makes them great:

Fluval LED Light
1Our Pick

Fluval is known for its high-quality LED lights that are designed specifically for aquarium use. They offer a range of lights with different color temperatures and intensities to meet the needs of different types of aquariums.

Finnex Led Light

Finnex is a well-known brand that offers a variety of LED lights for aquariums. They are known for their durable and long-lasting lights that provide bright and efficient lighting.

NICREW Led Light

NICREW offers a range of LED lights for aquariums with different color temperatures and intensities. They are known for their affordable prices and energy-efficient lights.

Current USA Led Light
Current USA

Current USA is a popular brand that offers a range of LED lights for aquariums, including high-intensity lights for coral reef aquariums. They are known for their high-quality lights and innovative features, such as adjustable color and intensity settings.

Marineland Led Light

Marineland is a well-known brand that offers a variety of lights for aquariums, including LED lights and fluorescent lights. They are known for their high-quality and reliable lights that are suitable for different types of aquariums.

Hygger Led Light

Hygger offers a range of LED lights for aquariums with different color temperatures and intensities. They are known for their high-quality lights and innovative features, such as adjustable settings and timers.

Aqueon Led Light

Aqueon is a popular brand that offers a variety of LED lights for aquariums. They are known for their reliable and long-lasting lights that provide bright and efficient lighting.

Aquatic Life Led Light
Aquatic Life

Aquatic Life is a well-respected brand that offers a range of LED lights for aquariums. They are known for their high-quality lights and innovative features, such as adjustable settings and timers.

Giesemann Led Light

Giesemann is a high-end brand that offers a range of LED lights for aquariums, including high-intensity lights for coral reef aquariums. They are known for their high-quality lights and innovative features, such as adjustable color and intensity settings.

Orphek Led Light

Orphek is a premium brand that offers a range of LED lights for aquariums, including high-intensity lights for coral reef aquariums. They are known for their high-quality lights and innovative features, such as adjustable color and intensity settings.

It is important to consider the specific needs of your aquarium when choosing an aquarium light. Factors such as the type of plants or fish you keep, the size of the tank, and the lighting conditions in your home should all be taken into consideration.

Natural or Artificial Light, which is Better

  • Natural Light
  • Artificial Light

The presence of natural light is advantageous for Betta fish as it helps maintain their circadian cycle, which is necessary for their wellness. Furthermore, natural light also encourages them to produce melanin, a pigment that boosts their strong colors.

Natural Light

On the contrary, artificial illumination is necessary to adequately light up the tank, especially if the aquarium is in a room with scarce natural light. In addition, artificial light provides the user with the ability to control the duration and strength of the light, which is critical for sustaining a healthy habitat for the Betta fish.

Artificial Light

When using artificial light, it is recommended to use a full-spectrum LED light with a color temperature of around 6000-6500K, which mimics natural daylight and promotes healthy growth and vibrant coloration in Betta fish. The duration of the light should be kept consistent and not exceed more than 12 hours per day to prevent stress and promote a healthy sleep cycle for the fish.

In conclusion, for Betta fish, a combination of both natural and artificial light is recommended to provide a healthy and stable environment for the fish to thrive.

Best Lighting for Betta Fish Tank

Picking the right illumination for your Betta Fish aquarium can be overwhelming. The lighting you settle on will influence not only the look of your Fish but also the health of your Fish.

Best Lighting for Betta Fish Tank

To start with, it is significant to realize that Betta Fish need a certain measure of light day by day. Usually, 12-14 hours of light is sufficient for a solid Betta. This light can originate from a blend of synthetic and natural light sources.

When it comes to artificial lighting, LED lighting is the best decision for a Betta Fish tank. LEDs are energy efficient, long-lasting, and won’t produce too much heat. You can likewise control the brilliance of the lights with a primary dimmer switch.

When lighting your Betta Fish tank, you should be mindful of the amount of direct sunlight hitting the tank. Too much sunlight can be detrimental and cause the tank to heat up. Instead, it would be best if you attempted to use indirect sunlight from a nearby window to give your tank a natural, shimmery appeal.

Also, keeping an eye on the tank’s temperature is crucial. Betta Fish are most content when the water temperature is between 78-82 degrees Fahrenheit. Make sure you use a thermometer in the tank to ensure that it remains within this range.

The ideal Betta Fish tank should have 12-14 hours of light each day, combining both artificial and natural sources. Opt for an LED lighting source that won’t create too much heat and use indirect sunlight to avoid overheating. Monitor the tank’s temperature with a thermometer to ensure it stays in the optimal range for your Betta Fish.

Do Betta Fish Need Light At Night?

  • Betta Fish Need Light at Night

It’s essential to give both female and male Betta Fish light so they can manage their daily rhythms and activity. The amount of light they need in the dark can differ based on the species. 

Do Betta Fish Need Light At Night

For most of Betta Fish, it’s suggested to keep the lights off after dusk. This aids them in resting and recovering, not to mention minimizing their stress. Furthermore, by turning off the lights in the evening, you are helping your Betta fish’s natural behavior and avoiding any negative impacts from too much illumination. 

If you have a Betta fish accustomed to having a lot of light during the night, you can keep the lights on in the evening. Nevertheless, you must keep the light levels low and make sure they are not too bright.

Does Betta Fish Need Sunlight?

Betta Fish, commonly called Siamese fighting fish, are a species of freshwater fish indigenous to Southeast Asia. These vibrant creatures are quite the hit with pet owners due to their eye-catching colors and the simplicity of caring for them.

  • Betta Fish Need Sunlight

When it comes to the sun, Betta Fish don’t need direct exposure to it. In the wild, they live in stagnant pools, so the direct sun can cause the water to skyrocket in temperature, making it too warm for them to thrive. Instead, they prefer the natural light that filters through trees and plants.

Does Betta Fish Need Sunlight

Although some Betta fish owners allow their Bettas to receive some exposure to natural sunlight, it’s still advised to use a tank cover or hood to filter the direct sunlight and reduce the amount of heat and light the Fish is subjected to. Plus, in order to keep your Betta Fish healthy, it’s important to keep an eye on the water temperature, as Bettas can’t handle the heat above 82°F (28°C). 

So, no need to fret about the natural sunlight for your Betta Fish. As their aquarium is kept at an appropriate temperature and they have enough access to natural light through a filter or tank cover, Bettas can still live happily in a wide range of environments.

Can Betta Fish See Color?

Of course, Betta fish possess the ability to perceive colors. They possess retinal cells that can identify a variety of light wavelengths, allowing them to differentiate between hues.

Can Betta Fish See Color

Nevertheless, they cannot observe all the colors as accurately as we humans. Betta Fish are most receptive to red, blue, and green light, which explains why they seem more drawn to these shades. In addition, Betta Fish can detect ultraviolet light, which helps them to discover food in murkier water.

How Much Light is too much for Betta Fish?

Too much light can wreak havoc with a Betta’s life, including causing stress, a decrease in appetite, a general decline in health, and even death. In general, it’s best to provide Betta Fish with no more than 8 to 12 hours of light per day, with the remainder of the day in darkness, to facilitate a regular day-night cycle that maintains their health.

It’s noteworthy to understand that the type of light you pick will also impact how much light Betta fish can tolerate. Fluorescent bulbs, for instance, often emit more light than essential and should be avoided. LED lights are a better option, as they can provide a customizable amount of light.

How Much Light Does a Betta Fish Need?

Bettas require illumination to stay alive and healthy, and the ideal solution is to use artificial light. LEDs are the leading choice as they present a good brightness level for low power utilization and won’t warm up the water in the container.

During the day, your Betta should have 14-16 hours of light and then 8-10 hours of darkness in the evening. Bettas need a combination of light and darkness to survive, and timers can be adjusted to switch the light on and off at predetermined times – this is a convenient and effortless way to do it. When selecting a light for the tank, consider the Fish’s natural habitat, temperature, and the light’s influence on algae and the tank’s pH level.

Do Betta Fish Sleep With the Light On?

It’s alright for a Betta fish to doze off in the light, but not all of them would want to. Some Betta fish would like to sleep in the dark or a less bright surrounding, while others are totally fine with catching some Zzzs in the light.

Do Betta Fish Sleep With the Light On?

It depends on their choice, but offering them a dark place to sleep in is generally recommended, like their tank cave. If you’re up for it, you can turn off or dim the artificial lighting in your tank at night, so you can still observe your Betta while they’re sleeping.

For your Betta fish to enjoy a good night’s sleep, it is advisable to have some darkness in the tank. Since Bettas are typically active during the day, establishing this pattern will help them become relaxed and have a peaceful sleep at night. It is also worth noting that they must not be subjected to direct sunlight as their sensitive scales could be harmed. 

In a nutshell, Bettas can sleep while there is light, but providing them with some dark times is the better option to ensure they get the rest they need. It is essential to create a routine so they will feel secure as they slumber.

What Happens if Bettas don’t get enough light?

If Bettas don’t get enough light exposure, their vigor and spirits will take a dive. Without sufficient illumination, these Fish will become sluggish and cease to swim, which then leads to a loss of appetite and a dip in their health.

Furthermore, a deficiency of light makes them more susceptible to various diseases since their immune system gets weakened due to the lack of physical activity, nutrition, and appetite. To ensure your Betta receives the right kind of light, you should give them an aquarium with lighting specifically designed for them. This light should be switched on 12-14 hours a day, which Bettas needs.

Can Betta Fish Be in the Dark?

Even though Betta Fish can live in the dark and somewhat see in the dark, it is essential to make sure their other needs are taken care of. They need a temperature of 72-82F, a pH level of 6.5-7.5, and a water hardness of 5-15 dGH. Without these elements in the tank, the Betta fish won’t be able to thrive, no matter how dark it is.

Can Betta Fish Be in the Dark

Besides, they need to have a filter in the tank, and the water needs to be changed every two weeks to eliminate contaminants and waste. The dark environment can make the Betta Fish feel more secure and relaxed, but they still need the conditions to survive. 

Also, Betta fish can be stressed by too much light or sudden fluctuations in lighting. To prevent that, it’s better to keep them in tanks with low light and give them lots of hiding spots. Keeping them in the dark is safe and beneficial as long as their basic requirements are fulfilled.


Is it alright to keep the lamp on for Betta Fish? The answer is Yes- You should give your Betta bright light. Nevertheless, the kind and brightness of the light should be thoughtfully selected and illuminated for a short time. Additionally, it’s essential to remember that Betta fish can manage in both light and dark, but they still require some light.

If you’re interested in learning more about fish keeping, our website has many articles like product reviews, top-rated lists, how-to format queries, and many more related topics.


Do Bettas Need Lots Of Sunlight?

The short answer to your question is maybe. While Bettas do need some sunlight, they don’t necessarily need a lot of it.

Bettas are tropical fish, so they are used to living in places with warm temperatures and humid climates. Sunlight helps create this type of environment and can be beneficial for Bettas. Sunlight can help keep the water warm, which can be helpful for their metabolism, and can also provide essential nutrients for their health.

However, too much sunlight can be a bad thing for Bettas. Direct sunlight can cause the water temperature to become too warm, which can put your Betta at risk of overheating. In addition, direct sunlight can cause algal blooms, which can lead to poor water quality and cause an imbalance in their habitat.

So when it comes to giving your Betta sunlight, moderation is key. If you have a tank with some direct sunlight, it’s best to monitor the temperature closely and make sure it isn’t getting too hot. You may also want to consider adding some shade to the tank to keep it from getting too bright.

How Much Light Do Betta Fish Need?

Betta fish need about 8-12 hours of light per day in order to stay healthy. This is because they are a tropical fish, so they need the light to regulate their natural biological functions.

Ideally, you should provide betta fish with a full spectrum light that ranges from 6500K to 8000K. This will help them to see colors better, as well as to regulate their body temperature and metabolism. Additionally, it will also help them to better recognize their environment.

Additionally, it’s important to note that betta fish don’t need direct sunlight. In fact, too much direct sunlight can be bad for them, as it can cause them to become stressed and overheat. Instead, they should be kept in an area where they can get indirect sunlight or where there is a good source of artificial lighting.

Finally, it’s important to remember that even with the right amount of light, betta fish still need plenty of other care in order to stay healthy and happy. This includes regular water changes, a clean tank, and a healthy diet.

How Much Light Can Be Harmful To Betta?

When it comes to betta fish, understanding how much light is too much can be tricky. Since too much light can be harmful to your betta, it’s important to know how to regulate the amount of light in their habitat.

The general rule of thumb is that they need at least 8-10 hours of light per day. Any more than that can be harmful and can cause them stress. It’s best to keep the lights on for 8-10 hours and then turn them off at night so your betta can rest.

In addition to regulating the amount of light, you should also take into account the type of light you’re using. Make sure you’re using a full spectrum LED light that provides the right wavelengths for your betta’s habitat. LED lights are generally more energy efficient and don’t produce a lot of heat, so they won’t raise the water temperature in your tank.

Finally, you should also consider the intensity of the light you’re using. Bettas prefer more subdued lighting, so try to keep the lights on a lower setting. If the lights are too bright, it could stress out your betta and cause them to become ill.

Overall, when it comes to betta fish and light, it’s important to regulate both the amount and type of lighting you’re providing in their habitat. 8-10 hours per day is generally enough, but make sure you’re using the right type of light and keeping it at a low intensity. Doing so will ensure your betta stays healthy and happy!

Can Betta Fish Live With Just 10 Hours Of Light?

Yes, Bettas can absolutely live with just 10 hours of light! In fact, some Bettas even prefer this amount of light over longer hours.

Bettas are native to Southeast Asia, where they inhabit shallow, low light waters. This means they naturally evolved to live in conditions with shorter periods of light. As such, they don’t need long periods of light to live comfortably. Ten hours of light a day is more than enough for the average Betta.

As long as you are providing the right type of light, it doesn’t matter how many hours you have it on for. It’s best to use a soft white or blue light for the Betta, though you can also use a full spectrum light if you wish. You should avoid bright lights, however, as this can be too intense for the Betta.

It’s also important to make sure the light is on during the day and off at night. This will help your Betta stay on a regular schedule, as well as help them understand when it’s time to feed and rest. Keeping a consistent routine is key for the overall health of your Betta.

So yes, your Betta can definitely live with just 10 hours of light. Just make sure you are providing the right type of light and keeping a consistent schedule. Your Betta will thank you for it!

Should Betta Get Natural Light During The Day?

Yes, Betta fish should get natural light during the day! Betta fish are tropical freshwater fish, which means they’re used to living in warmer water temperatures and environments that are lit by natural sunlight. Natural light helps to regulate Betta’s biological clocks, as well as helping to keep their colors vibrant and healthy.
Additionally, natural light helps to provide some stimulation to the fish, which can help keep them more active and reduce boredom.

When providing natural light for your Betta, it’s important to make sure it’s not too bright. Too much light can cause stress and even burns on the fish. It’s best to provide a few hours of indirect sunlight or indirect light from a window. If you don’t have access to natural light, you can also use a fluorescent bulb designed for aquariums. This will help to provide the same benefits of natural light without the risk of burning or stressing out the fish.

Overall, natural light is an important part of keeping a healthy Betta fish environment. It helps to regulate their biological clocks, keeps them active and stimulated, and helps to keep their colors vibrant and healthy. Just make sure not to overdo it and you should be good to go!

How To Optimize Day And Night Cycle For Betta tank?

Optimizing the day and night cycle for your betta tank is important for your fish’s health and well-being. Betta fish naturally live in tropical environments where there is a regular day and night cycle. In captivity, it’s important to recreate this cycle for your betta to feel comfortable and remain healthy.

The first step to creating a healthy environment for your betta is to provide the right lighting. You can use a timer to turn the lights on and off in the morning and evening, simulating a natural day and night cycle. Make sure that the lights are not too bright or too dim, which can be stressful for the fish. You should also try to provide some natural light, as this will make the environment more realistic.

You should also consider controlling the temperature of the tank. In nature, temperatures will drop at night, so you should replicate this in your tank. During the day, keep the water temperature around 78-82 degrees Fahrenheit and at night, drop it to about 74-78 degrees Fahrenheit. This will give your betta the chance to rest at night and have a regular sleep cycle.

Finally, you should also consider providing some hiding spots in your tank. Betta fish like to hide away at night, so make sure you have plenty of plants or decorations for your fish to hide in. This will give them somewhere safe and secure to sleep at night and help them feel comfortable in their environment.

By following these tips, you should be able to optimize the day and night cycle for your betta tank and create a healthy, comfortable environment for your fish. Good luck!

Can Changes In Light Be Harmful To Your Betta?

The short answer to this question is yes, changes in light can be harmful to your betta, but it depends on the type and amount of light. Bettas, like many fish, are sensitive to light changes. Too much light can cause stress and health problems, while not enough light can lead to lethargy and a lack of appetite.

When it comes to betta tanks, it’s important to maintain a consistent lighting schedule for your fish. Bettas thrive in natural light conditions, so try to keep the same amount of light in the tank throughout the day. You can also use artificial lighting if you choose, but make sure it’s not too bright or too dim.

It’s also important to avoid sudden changes in light. If you have to make changes, do so gradually over a few days or weeks to give your betta time to adjust. Your betta may also be sensitive to certain light colors, so try to avoid bright blue or red lights. White or yellow lights are usually best for bettas.

In conclusion, changes in light can be harmful to your betta if they’re too drastic or too bright. To keep your betta healthy and stress-free, maintain a consistent lighting schedule with natural or artificial lights and avoid sudden changes in brightness.

Do Bettas Prefer Artificial Or Natural Light?

When it comes to lighting, Bettas have their own preferences just like humans do! Bettas actually prefer natural light over artificial light because it provides them with a more natural environment. Natural light also helps them recognize day and night cycles, which helps regulate their sleep patterns and keeps them healthy.

In addition to natural light, Bettas also need supplemental lighting for optimal health. This is especially important if you keep your Betta in an aquarium or tank, since natural sunlight may not be able to reach them. A combination of full-spectrum LED lighting and natural daylight is the best option for Bettas because it provides them with a range of colors and intensities that mimic a natural environment.

Also, make sure to provide your Betta with 8-10 hours of light per day. This will help maintain their internal clock and ensure they’re getting enough rest. Lighting should be dimmed at night to simulate the dark of night.

Overall, Bettas prefer natural light, but they also need supplemental lighting for optimal health. Make sure to provide them with 8-10 hours of light per day and dim the lights at night to simulate the dark of night.

Betta Has Too Much Darkness In Tank

Having too much darkness in your betta tank can be a problem. Bettas are tropical fish that naturally live in shallow, warm, and well-lit water. With too much darkness, they can’t get the light they need to stay healthy and happy.

The good news is, you can solve this problem by providing your betta with more light. If you have an aquarium hood or cover, consider removing it or replacing it with something that lets more light through. You can also invest in a tank that comes with LED lighting built in, or add some LED lights to your existing tank. Make sure to adjust the lighting schedule to give your betta 8-10 hours of light per day. Be careful not to leave the lights on for too long, as that can lead to algae growth.

In addition to more light, you should also make sure your betta has plenty of natural plants in their tank. These plants will help create a healthy environment for your fish and will help filter out any extra darkness in the water.


Aaron White

Senior Editor at

I am a passionate writer for FishyFishPet, a website dedicated to helping fish pet owners of all levels learn about the best practices for caring for their aquatic companions. On our site, you’ll find a wealth of information on everything from choosing the right fish species to setting up a healthy and thriving tank ecosystem. Whether you’re just getting started with fish ownership or you’re an experienced aquarist looking to expand your knowledge, FishyFishPet has something for everyone. Thank you for stopping by and I hope you find our site helpful and informative.

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