How Far Can Betta Fish See? An In-Depth Explanation

Betta fish is a tropical freshwater species and has a fantastic ability to see. Its eyes are on top of the heads, making this fish an expert when scoping out its surroundings.

Although many people already know that their betta fish can see, most are unsure, “How far can betta fish see?”

We will help you answer this question and provide other valuable information. Scroll down for details!

How Far Can Betta Fish See?

The betta fish has poor vision

Betta is pretty near-sighted and has trouble focusing on a thing more than 2 to 4 feet away. This fish can recognize things that are larger or highly contrasted colors up to 10 to 15 feet.

In addition, the betta fish has monocular vision, meaning it can see a different thing with each of its eyes.

Human eyes do not reflect light. So they do not allow us to see in a dark environment. Even if you use special vision aids or heightened senses to enhance distant vision, seeing in complete darkness is impossible.

The eyes of the Betta fish are not significantly different from your eyes as this fish can be considered a refractive animal. This fish focuses on things far away with no reflecting rods visible inside its pupils.

Eyesight Of Betta Fish

One eye on each side of your head is a challenging concept to measure out in your brain. If your eyes mix two images captured from your two eyes into one single image with color and depth, the Betta fish does not have this luxury.

Depth Perception

This fish has an eye on each side of its head, so it cannot combine one single image, which is how you and we perceive depth.

Try pulling night-vision goggles down and over your eyes, and you will know how these fish see from one single eye’s perspective.

These goggles will separate one eye’s ability to coordinate with the other, removing the depth sense you are used to.

The same goes for the Betta fish, except its eyes capture different pictures and process them simultaneously, which our eyes cannot do.

Color Vision

Betta in aquarium with bubbles

The Betta fish has diurnal retinas, meaning that this fish is more likely to see colors. But how well it can see color, especially in comparison with humans, is not entirely clear.

One of the things that we know well about the Betta fish is that it is capable of distinguishing between various colors.

But this species needs enough light to do that. In a darker environment, with the only light source in your aquarium, this fish may have a harder time distinguishing colors.

The Betta fish also can shape in well-lit environments. So colors and shapes are not a handicap but also not the primary method by which this fish senses things within its environment.

Does Betta Fish Prefer Being in the Dark?

This fish doesn’t necessarily love that, but it would appreciate a regular day and night cycle since this fish sleep nicely in the darkness like us.

You should give your Betta fish a day and night cycle if possible.  If your aquarium has adjustable LEDs, we recommend setting them down to the dimmest settings if possible.

Can My Bettas Eat in the Dark Environment?

This fish tends to be inactive at night and has not adapted to seeing in a dark environment.

While this fish can see things and might sense them with their other senses, finding food in a dark tank will not be easy. That said, you should feed your betta fish with the tank lights, allowing them to locate food properly.


Do Bettas Prefer Being in the Dark?

Yes! Bettas love having a lovely dark, quiet space to sleep.

Can Betta Fish Utilize Other Senses?

White red and blue betta

Like many other animals, Betta uses other senses as the primary means to identify things in her aquatic world.

Hearing, taste, and smell are three senses that far exceed their vision capabilities. This fish combines three senses and utilizes them as one single unit.

Betta will know that a small piece of food hit the water clarity on the other side of your tank. Betta can see the food, but it can taste, smell, and hear it when it hits the water.

What If Betta Fish Gets Too Much Light?

Betta needs plenty of light and water to survive. But if this species gets too much light, it can suffer from some issues, such as vision problems and even death.

Is This Fish Scared of the Dark?

The answer is No. However, this fish has poor vision and can’t see well in a dark environment. But it doesn’t mean it will be afraid.

Does Too Much Dark or Light Affect Betta Fish?

Too much dark or light might negatively affect this fish’s nervous system and health, making them get a confused state of shock and unable to be active or sleep.

What is A Proper Day-Night Cycle for My Betta Fish?

Like humans, these fish want enough sleep to support their natural processes.

They want eight to ten hours to sleep per night, allowing them to get enough energy to swim, find food, and be active during the day.

Along with keeping this fish awake for a long time, having an excess amount of light can boost harmful algae growth.


The Betta fish is nearsighted, but that does not mean that this is the only sense.

This fish uses other exceptional senses to perceive things around its dark environment. However, shortsighted does not mean blind. This fish can see quite well over a short distance.

As always, we hope that you have found our information helpful in solving your questions. If so, please share this post with other fish fanatics in your life.