Betta Fish Cloudy Eye: Causes, Symptoms and Treatment

Betta fish are a popular pet for many people. They are small, colorful, and can be easy to care for. However, like any other type of pet, they can experience health problems.

Betta fish cloudy eye is a condition that results in the eyes of the fish appearing cloudy or opaque. This condition can be caused by a number of factors, such as bacteria, parasites, or injuries. If your Betta has cloudy eye, it is important to take him to the vet for treatment.

This guide will cover what causes cloudiness in the eyes of bettas and how you can treat it at home with minimal effort or expense. We’ll also discuss prevention methods so this doesn’t happen again.

What is Cloudy Eye in Betta Fish

A Betta fish with a cloudy eye is not a pretty sight. The eyes are the window to the soul, and when they are cloudy, it can be difficult for the fish to see. This can lead to problems with eating and swimming. Cloudy eyes can be caused by a number of things, including infection, inflammation, or injuries. If your Betta fish has a cloudy eye, take him to a qualified veterinarian for diagnosis and treatment.

The cloudy eye is not contagious and can be treated with antibiotics if it is caused by a bacterial infection. Treatment for other causes will depend on the specific cause.

Causes of Betta Fish Cloudy Eye

There are a few different things that can cause this condition, but the most common one is a bacterial infection. Other causes that can create disorders in the eye of fin fish: parasites, poor water quality, physical stress injuries, and tumors.

Bacterial Infection

If your betta fish has a cloudy eye, it may be due to a bacterial infection. The cloudy eye may be red and swollen, and the fish may have difficulty seeing.

Bacterial infections may result in Puss forming on the Betta’s Betta’s eye area; bacterial Bacterial infections also often cause inflammation of the cornea, infected gills, and fins for betta fish, and generally being sickly with a high temperature.

Cloudy eyes in fishes can be caused by a number of different bacteria. Some common causes of cloudy eyes in bettas include Aeromonas hydrophila, Streptococcus creating corneal opacity, and Corynebacterium creating exophthalmia. If left untreated, a bacterial infection can lead to blindness and even death.

Poor Water Quality

Betta Fish Cloudy Eye for poor water quality is a common problem that can be easily treated if caught early. Signs of poor water quality in a betta fish tank include cloudy eyes, lethargy, and fin rot. If you notice any of these signs, take action to improve the water quality in your tank as soon as possible.

One of the most common causes of cloudy eyes in betta fish is poor water quality. When the water is dirty or polluted, it can cause irritation and inflammation in the eyes, which results in a cloudy appearance. Improving the water quality in your tank is essential for keeping your betta healthy and happy.

There are several things you can do to improve the water quality in your betta fish tank. The most important thing is to make sure you are doing regular water changes.

Parasitic Infestation

If your betta has cloudy eye, you will likely notice that one or both of its eyes look cloudy or foggy. The affected eye may also be swollen or red.

One common illness among bettas is cloudy eye, which is caused by a parasite. Left untreated, the parasite can cause damage to the eye and even lead to blindness.

The cloudy eye often occurs when there is some type of secondary parasite infestation inside of the fish this could be from things like protozoa, parasitic worms, external crustaceans such as crab lice ick, an internal worm problem.

Physical Stress

Stress is another cause of bacteria growth in Betta Fish, so make sure betta fish is comfortable and its environment is stable during treatment.

In such cases, it is necessary to treat your Betta Fish by providing treatment with antibiotics through oral or prevention of consuming food through water additives.


Cloudy eye in Bettas is often caused by malnutrition. When a Betta doesn’t get enough to eat, the eyes may become cloudy. This is because the fish isn’t getting the proper nutrients it needs to stay healthy. Cloudy eye can also be caused by other factors such as infection or pollution.

Genetical Susceptability

Genetical Susceptibility to the cloudy eye is observed in betta fish cloudy eye cases. Betta’s may also suffer from eye problems due to abnormalities in the structure of their skulls.

It is important for you to constantly check your Betta’s eyes for any change that could indicate a problem. Sometimes Betta Fish have misplaced or wrongly structured scales on their heads and faces.

Your Betta may experience difficulty in eating food with these structures, leading him or her to develop algae overgrowth on the face and head – this can cause cloudiness in the issues too other health prone to are more cloudy eyes.

Sign & Symptoms of Betta Fish Cloudy Eye

When a betta fish’s eye becomes cloudy, it can be a sign that something is wrong. Cloudy eyes may be caused by an infection, injury, or another problem. Common symptoms of cloudy eye in betta fish include:

-One of the most common sign and symptoms of a betta fish with cloudy eye is that they will not eat. This is because when a fish’s eyes are cloudy, they cannot see as well which makes it difficult for them to find food.

-Other common signs and symptoms include refusing to swim around, sitting at the bottom of the tank, and having red streaks on their body. They appear lethargic or disorientated.

-The eye being sunken into the head

-Puffy eyelids

-Excessive blinking

-Head tilting

-The eye being red or inflamed

-The white part of the eye being cloudy or murky

How to Diagnose Cloudy Eye in Betta Fish

A cloudy eye in a Betta fish can be caused by a number of things, from environmental factors to infections. If your Betta has a cloudy eye, the first step is to try and determine the cause. Some common causes of cloudy eyes in Bettas include:

-Environmental factors such as poor water quality or too much sunlight
-Infections such as bacterial or fungal infections
-Tumors or other growths on the eye

If you are able to determine the cause of your Betta’s cloudy eye, you can then take steps to treat it. Treatment will vary depending on the cause, but may include antibiotics for bacterial infections, anti-fungal medication for fungal infections, or surgery for tumors or other growths on the eye.

How to Prevent Betta Fish Cloudy Eye

There are a few things you can do to help prevent your betta fish from developing cloudy eye.

One way is to make sure that the water quality in their tank is always clean and clear. It is to make sure they have clean, fresh water at all times.

You should also feed them a healthy high-quality diet of both protein and vegetable-based foods. You should also feed them a diet and avoid overfeeding them. Too much food can lead to poor water quality and other health problems.

Additionally, you can help keep their environment healthy by providing them with plenty of plants and other decorations to swim around in. You should also give your betta plenty of space to swim and exercise. If their tank is too small, they may become stressed which can lead to cloudy eye.

How to Treat Cloudy Eye in Betta Fish

Cloudy eye is a common ailment for betta fish. The causes of cloudy eye can be many, but most often it is the result of an infection. If your betta has cloudy eye, you will need to treat it with antibiotics.

There are many different types of antibiotics available. Treatment typically lasts around two weeks. Analysis of Betta Fish samples can determine if Bacteria such as Aeromonas hydrophila are causing this problem in Betta Fish.

During treatment, make sure to keep the water clean and free of any contaminants that could aggravate your betta’s condition.

Treatment for Bacterial Betta Infections consists of long-term antibiotic therapy, sometimes these medications must be administered through oral medication feeding; another way to treat bacterial infection in betta fish is prevention through water additives.


How to tell if your betta fish has cloudy eyes?

Your betta fish’s eyes should be clear and bright. If they are cloudy or have a film over them, your betta may be sick. Cloudy eyes can be a sign of many different illnesses, including ich, fin rot, and even tuberculosis. If you notice that your betta’s eyes are cloudy, take him to a vet as soon as possible for treatment.

Is fish cloudy eye contagious?

Yes, a fish cloudy eye is an infectious disease that can be transmitted to other fish.

It’s normally caused by bacterial infection and it damages the epithelium within the eye as well as in other organs of the body (such as fins). It also damages the cornea and then irritates the conjunctiva tissue on its way out of outside tissues.

So far, there seems to be no antibiotic treatment for this disease, but rest assured it is not fatal or life-threatening when treated at home.

How long does it take to clear up cloudy eye betta fish?

Cloudy eyes in bettas can be bacterial, viral, or fungal. There is some variability in how long it takes to clear up each of these depending on the cause and severity of the infection, so visiting your local vet would be the best way to determine what’s going on with your fish and make sure that any medications you use are appropriate for what you’re dealing with.

If your eye is really cloudy, you can take a jar (or anything that will hold water), mix in some sea salt, and dissolve it. Once the salt is fully dissolved, put the eyes of your fish inside the clear water and let them soak for 15-30 minutes or until they’re looking better.

What is cataract in betta fish?

A cataract is a cloudy or opaque area in the lens of the eye. The lens is located behind the pupil and helps to focus light on the retina, located at the back of the eye. The retina is responsible for converting light into electrical signals that are sent to the brain, allowing us to see.

A cataract can develop in any part of the lens, but often forms in the center. Cataracts are most commonly caused by aging, but can also be caused by: trauma (injury), certain medications, and radiation.

Symptoms of a cataract may include: blurred vision, difficulty seeing in low light conditions (night blindness), double vision, and colors appearing faded. If left untreated, a cataract can eventually lead to blindness.

Final Words

In conclusion, betta fish are beautiful pets that can be fun and easy to care for. But sometimes they get sick, and it’s important to know how to take care of them. One common symptom is betta fish’s cloudy eyes, which can make the fish look like it has cataracts or an infection.


  1. William J. Hargis, Disorders of the eye in finfish, Annual Review of Fish Diseases, Volume 1, 1991, Pages 95-117