Why are my angelfish’s eyes cloudy?

In this post, we will answer the question “Why are mu angelfish’s eyes cloudy?”. We will also discuss if it is possible to cure cloudy eyes in angelfish.

Why are my angelfish’s eyes cloudy?

Your angelfish’s eyes may have become cloudy due to the reasons below:

  • Genetics;
  • Physical injury;
  • Infection;
  •  Cataracts
  • Poor water quality.

If you can pinpoint the source of your fish’s foggy eyes, you may take steps to eradicate the problem and restore the fish’s health to its aquarium.


Check to see whether your fish’s eyes are hazy and that this is not usual for their specific species before releasing them. There are a few fish species that have naturally murky or milky eyes, and these are called milky eyes. 

For example, the hazy eyes of goldfish are not a problem because they are a natural feature of their structure. The eyes of pufferfish and rabbitfish are naturally white because of the gloss on their skin. 

For cloudy eyes to be considered natural, the white sheen should be present in both eyes and should have been there since the eyes were first hatching out.

Physical injury

After you have eliminated all natural causes of the hazy eye, you should assess the severity of the clouded eye. Having a milky sheen in only one eye indicates that your fish has had physical damage, such as a scrape or bump on the eyelid. 

As long as there is no bacterial infection in the eye, this sort of damage will normally heal on its own in a few days. Because the cloudiness will just be present on the surface of the cornea and not include the pupil, you may also observe a more superficial milky sheen in your fish’s eye in this case. 

If this is the situation with your fish, you should try to identify what caused the physical damage to begin with. If it’s something you can easily remedy, such as a sharp angle in your aquarium’s decor, don’t hesitate to remove it from the tank. 

Apart from collisions with objects, eye injuries can also occur as a result of fights with other fish. Injury of this kind will heal on its own if the fish is generally healthy and well-fed, which is the case in most cases. When an aggressive species is present in the tank, you should consider removing it if the problem continues. 

If your fish’s eyes have a milky shine to them, however, there is a good possibility that it was not caused by physical damage. In this circumstance, it’s advisable to investigate whether there are any other causes for the hazy eyes.


A weakened immune system can result in hazy eyes, which can be caused by an infection in particular. Bacteria is the most prevalent source of illness, and it is frequently caused by a lack of tank care. 

It is simple to avoid infections, whether they are caused by bacteria or parasites, by performing frequent tank cleanings. 

In addition, you should make certain that no hazardous germs or parasites enter your tank from outside. Remember to quarantine new fish before introducing them to a community tank to ensure that they are not sick or harbouring disease before introducing them. 

Cleaning everything that goes into your aquarium, including the décor, plants, and equipment, thoroughly is another effective approach to guarantee that you aren’t bringing hazardous organisms into your tank.


A cataract is a condition in which the lens of the eye declines, leading it to become opaque. Cataracts are caused by a variety of eye conditions, including inadequate diet, infection, and genetics. 

Cataracts are also a normal part of the ageing process in fish. When fish reach an advanced age, they are more likely than people to have impaired vision and eventually cataracts, which makes it harder for them to travel and feed. 

Unfortunately, there isn’t much you can do to reverse the damage done to your fish’s eyes in this situation. In contrast to the procedures that may be performed on people, there are just a few therapies accessible for aquatic animals. 

This is one of the most prevalent eye disorders in fish, and it is something that you have little control over. The best course of action is to maintain high-quality water conditions while avoiding the introduction of further pollutants. 

Cataracts can also be caused by parasites such as flukes, which enter the eye and cause damage from the inside. Symptoms of eye flukes in fish include an enlarging of the eye and milky patches in the inner iris. 

For the time being, there is no recognised treatment for ocular flukes. Once an infection has taken hold, there is little that can be done to stop it. Eye flukes are a kind of parasite that can cause blindness and are often found in the wild.

Poor water quality

Your fish’s disease may be less severe if they are not displaying any symptoms other than hazy eyes. If this is the case, their illness may be mild enough that they do not require medicine. 

If your fish’s hazy eye symptom has only recently appeared, your fish is likely suffering from this ailment as a result of a foggy fish tank. Cloudy eyes in fish are frequently caused by poor water quality, either directly or indirectly, and are most typically caused by a weaker immune system. 

As a result, it’s a regular occurrence in newly constructed tanks. Because poor water quality can be caused by a variety of factors, there are a few precautions you should take to reduce the symptoms of foggy eyes and red eyes. 

The eyeball of a fish has a structure that is comparable to that of a human. The outer layer of the eye is known as the cornea, and it serves to protect the interior structure of the eye from injury. 

The iris is located beneath the cornea and is responsible for adjusting the amount of light that enters the eyes. The lens, which is located behind the iris, bends the light that enters the eyes, allowing for improved perception. 

The lenses of a fish’s eyes are spherical, in contrast to the lenses in human eyes. This indicates that their eyesight is quite sharp in the centre, but becomes increasingly blurry as they approach the edges. 

The retina, which is located behind the lens and is responsible for processing light, is followed by the optic nerve, which is responsible for transmitting the processed information to the brain. 

When a fish’s eye is injured, cloudiness can appear in either the outer eye (containing the cornea) or the inner eye (consisting of the iris and pupil) (consisting of the rest of the eye structure).

Is cloudy eye harmful?

The appearance of a white coating on fish eyes should not be seen as a reason for alarm, and a hazy eye is not a medical condition in and of itself. Rather, it is a sign of something else. 

In other cases, it might be an indication that something more severe is going on in your tank and that you should take steps to prevent the problem from getting worse.

Can you treat and cure cloudy eyes in angelfish?

Fortunately, if the underlying cause of the cloudy eye has been identified and eradicated, the condition will usually resolve on its own. 

A simple cleaning of your tank, as well as the administration of medication to your fish, may swiftly remedy diseases and illnesses caused by poor water conditions or parasites. Treatment will be determined by the origin of the water condition as well as the kind of ailment. 

However, it is conceivable that the damage to your fish’s eyes has been done so badly that it will be impossible to rectify the situation. In this situation, the most important thing to do is to avoid more harm while still keeping your fish comfortable. 

If you respond promptly, you may be able to avoid further damage to your eyes as well as harm to the eyes of other fish. You may be able to heal your fish’s hazy eyes if you can identify the underlying problem in the early stages.


In this post, we answered the question “Why are mu angelfish’s eyes cloudy?”. We also discussed if it is possible to cure cloudy eyes in angelfish.

If you have any thoughts or doubts, feel free to drop us a comment below!

Frequently Asked Questions (FAQs): Why are my angelfish’s eyes cloudy?

What is the best way to treat Popeye in angelfish? 

To get rid of the illness, feed the fish a broad-spectrum antibiotic meal that has been prescribed by your pet supplier or veterinarian. If more than one fish is ill, it may be essential to treat the main tank with antibiotics as well, depending on the severity of the infection. 

Is pop-eye in a fish a thing of the past? 

It may take several weeks or months for the swelling to subside, and damage to the fish’s cornea may take even longer to cure than the edema. Even if the swelling subsides, serious damage to the fish’s eye may remain for a long time after it has occurred. 

Is Melafix effective in treating pop-eye? 

Infections caused by bacteria, such as fin and tail rot, eye cloud, pop eye, body slime and mouth fungus, can be treated with API MELAFIX cure fish. 

What is the source of my angelfish’s crimson eyes? 

The presence of a red eye in any angelfish indicates that it is fully mature and in good health. Not all kinds are susceptible to developing red eyes. 

What is causing my fish to swim sideways? 

It is the most often seen form of swim bladder illness, especially in goldfish, and manifests itself as positive buoyancy disorder, in which the fish floats at the surface or on its side. The most likely reason is an overinflation of the swim bladder. bladder. Overinflation usually takes place in the posterior chamber.


What Causes Cloudy Eyes In Aquarium Fish? https://be.chewy.com/what-causes-cloudy-eyes-in-aquarium-fish/

Fish Cloudy Eyes. https://cafishvet.com/fish-health-disease/fish-cloudy-eyes/

Angel Fish With A Cloudy Eye. https://www.fishforums.net/threads/angel-fish-with-a-cloudy-eye.347147/