Help! 2 of my fish are missing an eye?


Classification:Virus Transmitting agent:Bacterial, parasitic infections, vitamin deficiencies, nutritional deficiencies, and water parameters. Form of propagation:It is transmitted fish by fish and water to it.

Exophthalmia in Fish It is a disease called Cancer in fish. Sick fish have bulging eyes, stay in isolation, do not eat, swim slowly and shallowly to death.


Add a comment

that happened to me
Waa, my fish stay without eyes and still live
little by little I realized
that my other fish were eating them
you have to see if you have another type of fish may be the cause

Don't worry, they won't die just after
give them how to eat food fall close to them
to eat it and keep them a lot

Description of the disease

This disease is recognized by the desorbitation of one or both eyes, it can have different origins. There are several causes that can cause this pathology. Among the most frequent we will cite the following: bacterial, parasitic infections, vitamin deficiencies, nutritional deficiencies, and unstable and / or inappropriate water parameters for the species. Exophthalmia cannot be considered as a disease since it is a reaction of the organism against the attack of aggressive agents. One of the possible causes is the lack of vitamins, especially vitamin A, although the most common cause is a bacterial infection.

Other causes

The absence of eyelids in fish exposes the eyes to a varied possibility of bacterial attacks as a result of any injury that has been caused by any means, even by the very frequent territorial fights in certain species.

On many occasions the fish get scared and strike against the various objects found in their habitat, producing a fissure through which the aggressors enter. These aggressors can be any of the pathogenic bacteria from which every environment, no matter how clean, finds them omnipresent. In addition to this type of exophthalmia, another one caused by bacterial diseases can be found in the organism of the fish. Once introduced into the body, bacteria lodge or can be dragged to any organ, including the eyes, so it is very common to find exophthalmia in fish suffering from tuberculosis. Once the disease develops and when losing the eye, the other fish immediately devour it.

Exophthalmia occurs when an excessive amount of fluid accumulates inside the fish's eye. This excess fluid causes swelling of the eyeball with the typical outward projection. In severe cases, the eyes can really fall out of the orbits, leaving the fish blind. The swelling of the eye is due to an accumulation of fluids behind the eye.This symptom occurs as a reaction of the organism to the attack of aggressive agents, which may be of bacterial, parasitic or avitaminosis origin, may also be due to parameters of water inappropriate for that kind of fish.


Pass the affected fish or fish to a nursing aquarium as a first step. It is essential to improve the aquarium water quality through periodic changes and apply anti-bacterial medications, JBL Furanol or SERA Bactopur, for example, following the manufacturer's instructions regarding dosing. The treatment process is slow and if a recovery is not observed it is because the cause is tuberculosis, there being no alternative but the sacrifice of the fish because there is no cure.

Fish DISEASES - and the - REMEDIES


Even for a scholar in fish farming, nothing is more complicated like diagnosing the disease suffered by one of the fish in his aquarium. It is painful to act without complete knowledge of what you want to do.

Given the insecurity of a diagnosis, it is most convenient to use the disease remedy that most closely resembles the one believed to suffer from the fish. This in case you do not want to take it to a specialist who can get us out of doubt, the same as with a dog or a friend cat.

If you succeed, even if approximately, and the fish holds the baths, it will surely be saved. It is only necessary to act with a certain decision, correctly using the methods to follow in each case.

As in all orders of life, and much more in the case of fish, prevention is always easier than cure. Therefore, it is advisable to take into account, mainly, the correct oxygenation, the sudden changes in temperature or its lack or excess, the cleaning of the water and, above all, the food.

Diseases can own an aquarium in various ways: by new fish, by non-disinfected plants or by live food, product of puddles and ditches. The latter is very difficult to disinfect, although we recommend adding a teaspoon of common salt to the aquarium water for every five liters of water. With this, the reproduction of fungi will be avoided in many cases. Likewise, and especially in breeding aquariums, it is convenient to put a drop of “tripaflavin” at 4000 per liter of water, or 2% methylene blue.

Lack of oxygen

It is usually caused by an inappropriate aquarium, lacking balance or renewal of artificial air injected by means of pumps. Reduced aquariums with excess population where fish lack freedom of movement, feeding in these cases becomes very difficult, since water is contaminated with impurities.

The lack of oxygen can be denounced by the fish themselves, especially the "carassius", who are seen swimming or staying close to the surface and inclined, not presenting their current ways of action when the water has the required conditions For your life in health.

Excess oxygen

Just as the lack causes serious disorders in fish, an increase in normal (which should be 5 to 10 mg per liter), taken twice or more, produces the disease known as "gas embolism"

If in an aquarium the plants work well and have an aerator as a complement, it can be that, subjecting the container to the action of sunlight, the plants that had low oxygen production increase the same, with the consequent saturation of the water. The fish that breathe in that environment will soon suffer the consequences, being able to notice in their bodies, and especially in their fins, small bubbles that indicate their evil. If this is not detected in time, the death of the fish will occur.

But if, on the contrary, the fish farmer warns him in due course, he must immediately move the fish to another aquarium with normal water. In this way, they will have great chances of being saved.

On the other hand, the same causal aquarium can be improved, it is enough to avoid sunlight, momentarily suppressing the aerator and changing half of the water for another of equal temperature, so that the fish can normalize their life.


The fish can be weakened by staying at an inappropriate temperature, by abrupt change of it, or by passing them from one fish tank to another by changing water cooler than the one it contained. Therefore, we must pay maximum attention to the thermometer.

The ideal temperature for aquariums containing tropical fish is 23 to 25 degrees Celsius, equivalent to the Fahrenheit scale, from 70 to 74 degrees. That is, during the winter this temperature should be maintained artificially, through the use of special devices, which will be suppressed during the summer. If possible, the aquarium should be kept indoors, so that it is less exposed to continuous climatic variations. However, such caution is only necessary for tropical specimens, which are generally expensive and difficult to acquire.

On the other hand, fish quickly suffer thermal variations and their animal temperature is, in general, a degree higher than that of the environment. Therefore, when water from rivers or seas is heated, certain fish look for the temperature that suits them at depth.

When the water of an aquarium is changed, the one that is renewed will have a temperature superior in two degrees to that of the same.

We have to take into account that fish are cold-blooded animals, whose temperature is in accordance with the environment in which they live. The fish, in their natural habitat, have lived for many generations at a certain temperature, which the caretaker has to know, in order to keep it in their fish tanks, since the fish's organs and tissues are perfectly adapted to it

If the water temperature changes abruptly, the fish cannot acclimatize immediately. Therefore, your body suffers serious disorders, which results in the notary reduction of its vitality, as well as the lack of resistance to the various bacteria that can attack them, in some cases the death of the specimens, especially those of the weak by themselves.

When making water changes, it is absolutely essential to keep the thermometer in sight, in addition to faithfully following the following explanations:

When it is desired to reduce the “Fahrenheit” scale to Centigrade, the formula 5/9 (F-32) = C will be used


One of the most widespread diseases in fish is constipation, usually caused by an inadequate or poorly varied diet.

This disease is easy to recognize, since the fish swells in its ventral part. Their movements become much slower, there is a cross in the scales and, above all, an absolute absence of fecal matter. If the disease is discovered in time, it will only be enough to isolate the affected fish in a fish tank with good aeration, administering fleas and all kinds of live food in abundance.

Another procedure can also be used, consisting of catching the fish with a muslin net, and by means of a syringe filled with castor oil, a jet will be put in the mouth, having enough patience and dedication until making sure that the animal has ingested something. If the desired success is not obtained, the operation can be repeated, although first it is advisable to let the fish rest for a few minutes. If such practice has not yet been satisfactory, more drastic means can be employed. For example, water is prepared in a separate fish tank or any other appropriate container and heated to a temperature slightly higher than 10 degrees Celsius from that of the aquarium in which the sick fish lived. However, such temperature should never exceed 30 degrees Celsius.

Only with a lot of dedication and practice can it be detected that an aquarium fish has abnormalities, the result of a disease whose consequence could be serious, necessitating its immediate isolation and treating it with ordinary means, such as salt baths, permanganate, temperature increase, etc. On the other hand, the fish will only be returned to the aquarium or fish tank when it is completely certain that it has been improved (which is quite easy to observe).

There is also a certain relationship between food, water temperature and oxygenation. Every animal, whether land or water, lives by a series of complex and balanced chemical reactions. The main of all these reactions and on which the others depend, is a slow combustion of carbon and oxygen. The first is absorbed by the animal for food, and the second is by its lungs or gills.

This chemical transformation or phenomenon, called metabolism, is activated like any combustion, by means of fuel, the more oxygen, the more heat. If one of the factors increases, the others must increase in proportion. As an example, we must point out that a fish deprived of food will die faster at 28 degrees Celsius than at 26, therefore, it will also die earlier with excessively oxygenated water that with normal water Heat and oxygen consume food and tissues more quickly. Similarly, an excess of food without heat and oxygen consumed would cause similar disorders in the fish.

The hotter the water, the less oxygen it contains, so that in order to preserve the balance in a fish tank by increasing the temperature, the food and oxygen must also be increased.

This can be done by increasing the number of plants, intensifying the light or reducing the number of fish, although the latter is the safest. The experience will bear fruit little by little.

However, we have to make some suggestions to the novels:

· A) .- As stated previously, you should not overpopulate a fish tank or aquarium, even if it is artificially aerated.

· B) .- The plants must be fresh and vigorous.

· C) .- The aquarium will be cleaned, removing the waste munitions, at least once a week.

Dorsal fin

If a fish has its dorsal fin folded and its movements lack vigor, it is an unavoidable sign of abnormality. The dorsal fin of a healthy fish is deployed in its movements, although it should not be confused, observing it if it is excited.


It is the inflammation of the gills because the fish has been in an aquarium lacking oxygen and has had to struggle to breathe. Transfer the fish to another shallow aquarium and air it artificially, giving it live and vegetable food.

If some diseases are due to parasites, others are due to water quality. Thus, the salmon suffer the widening of the thyroid gland due to lack of iodine in the waters, which is manifested by a red line or dot on the floor of the mouth, near the second pair of gill arches, it is enough to add small solutions of iodine in the water where they live or in their food.


The cause is organic and can be treated by drying the eye and cleaning it with a cotton ball, with the following mixture: a part of iodine or nine of glycerin, the eye is bathed with a solution of boric acid and finally, it is dropped on the eye two 1 percent protargol drops.


The cause of this disease is a parasite, costia, that lives in the mucus of the epidermis. It is manifested by opaque spots on the body, as in the scales. The most common treatment is a salt bath or introducing the fish into a glass container, containing 5 liters of water and 5 drops of 40 percent formalin, after introduced into the fish, 10 more drops are added, one each minute. The bath will not exceed 10 minutes


If a fish, instead of swimming, remains still and the movements are carried out by means of undulations of the body, it suffers cold due to a sudden change in temperature and does not support it.


In the water there are many white-colored fungi that cover the remains of the food with their fluff, etc. These mushrooms are of the genus SaprolegnaAnd, of course, they do not attack live fish, but they have a wound, it is covered with fungi that in certain cases can invade the entire body, causing death.

The appearance of a fish attacked by fungi has whitish spots on the body or on the fins, irregular in shape and size. When a fish is attacked by fungi, it is not necessary to isolate it, unless it is very weakened, since there are species of saprolegnas throughout the aquarium and it will not contaminate others, but they are injured.

It is better to avoid the disease than to cure it, and for this it is necessary to have the aquarium very clean and remove the remains of food. Avoid sudden changes in temperature, separate species whose males are fighters and can harm others.

This disease causes serious disorders in rivers and aquariums. It was discovered in Germany in 1896.

It is distinguished by a horseshoe-shaped core, without the need for a microscope to determine it. It can be introduced into an aquarium for live food, plants, the same fish and water. In Jo which refers to plants or live food, they are only dangerous if they have been in water that contained sick fish.

The symptoms of this disease are :

white and bulky dots on the fins. These pustules quickly cover the entire fish, eventually killing it. The disease develops in the following way parasites that swim freely in the water perch on the fish and pierce their skin, which ends up becoming a true strainer. The fins lose their membranes. and the fish thins and dies.

The parasites, after remaining in the skin of the fish return to the water, where they multiply so that now the water is the transmitter of the contamination. The most delicate species suffer hopelessly, others, such as certain varieties of oviparous, heal without any treatment.

The best remedy: Indigestion is prepared

Hydrops in a pharmacy a solution of potassium permanganate to 1 / 1,000. In 1 liter of water 1 cc is poured. of this solution. The sick fish is caught with the net and the one with a soft brush is applied, avoiding especially touching the gills, always in the direction of the scales. Then, the fish is placed in an aquarium with new water and the operation is repeated every day until complete healing. On the market is a highly effective product of the laboratory Bonacqua -"Counterpoint"


It is manifested by presenting the fish the swollen belly and the total absence of stool. Generally, it is caused by an abuse of dry food. The fish is treated with a purge and live and vegetable food.


This disease has no cure, since it comes from cardiac or renal degeneration, motivated by paralyzing toxins, whether they are fermentative, tumor or parasitic.

Tobacco smoke

That the aquarium is in a closed place can be harmful to fish. We know that to remove the bad smell of tobacco, it is enough to place a vessel with water, which will absorb it, and the next day the smell will have disappeared. Naturally, an aquarium serves as a vessel.

As tobacco ash is a natural fertilizer, it is used for aquarium plants, although this system is not highly recommended.


This disease attacks poorly fed aquarium fish and lacks artificial ventilation. It is produced by a bacillus and its symptoms are sunken eyes, lack (appetite and progressive thinning. The fish should be taken to a well planted aquarium, with abundant sun and live food.

Swimming bladder

Swim bladder disorders are of organic origin and tend to cause poor diet, indigestion, or have kept the fish at low temperature for a more or less prolonged time.

The main symptoms are as follows:

abnormal behavior, float with the head down, swim with undulating movements of the body, lie on the bottom, try to climb to the surface to fall back, spin around without regaining its normal position ...

Healing is difficult, although it can be tried by placing the fish in an aquarium with little water, and a little salt, raising the temperature, artificial aeration and feeding it with water fleas or tubifex.

Preventive and curative remedies

Among the best known and used, we can cite the following:

It is used in cases where it is noted that there are fish attacked by saprolegnia or ichthyopyriasis, for which a solution of 5 percent methylene blue will be prepared, using one or two notes for every 5 liters of water, which will take a color bluish.

Sodium chloride

Or common salt, cooking salt, preferably coarse, being the one that should be used in salt baths, used as a preventive, especially in aquariums that contain mollienisias, in the proportion of 2 tea spoons flush, for every 4 liters of water, which does not harm plants or fish.

If fish attacked by fungi are frequently observed, this dose can be increased by the same amount of salt for 2 liters of water.

Salt baths

They are used to cure fungi with quite a good result. In that case, you take a large cup or, failing that, any other container, and pour water and salt in proportion that when tasting it, before putting the fish, it has a not very strong saline taste later, with a net proportioned to the size of the fish, it is submerged for a while, and then it gets into the same fishbowl or another one prepared previously,

This bath will be repeated every day until you notice that the fish detaches itself from the fungi and its movements are already more soils.


It is used in cases where strange formations are observed in the skin of the fish, on their scales or their fins. The proportion is 175 cc. per 10 liters of water. Baths should last 10 to 15 minutes.

Acetic acid

This bath, which will not last more than 1 minute, always gives excellent results. The solution is two degrees per liter of water. Let rest a week before taking another bath.

Quinine Hydrochloride

This is a well-known remedy. The treatment is very simple, just as its preparation is diluted quinine hydrochloride in the proportion of 1 gram per 40 liters of water. This product is soluble in water, which does not happen with the quinine sultado. On the other hand, it offers no danger to the fish, which can remain in these solutions for several days.

A quarter of a liter should be extracted every day for a week, so that the aquarium gradually returns to its natural state.


This antiseptic is used for fish as well as for plants before being placed in the aquarium. It can be used without fear in already populated and planted aquariums, using a drop per liter and a half of water, of a 2 percent solution of mercurochrome. In single plants, one drop per liter will be used.


Fish are purged using a bread crumb embedded in castor oil or halibut. The earthworms are also used in pieces, in which a hypodermic syringe with castor oil will have been introduced.

You can also immerse the fish in a solution of magnesium sulfate, but for a short time if intestinal discomfort is observed. Oil or sulfate enemas are advised, although they are difficult to administer and dangerous.

Malachite green

In cases of fungi, an aqueous solution of malachite green can be used in a proportion of 1 / 15,000, in which the fish will be put in for 10 to 30 seconds. If a bath does not work, it will be repeated every 2 or 3 days, without forgetting that the temperature of the bath must be equal to that of the aquarium.

Re: goldfish without an eye.

by ADURAN »05 Dec 2009, 03:50

What hurts what has happened to your fish, please tell us how many liters is your aquarium, the equipment you have filtration etc, general data. What interests me most is knowing what kind of fish you have varieties and sizes.

On the other hand, the loss of one eye can be caused by an infection of bacterial origin, because it was injured with an ornament or some bite accident of another fish, therefore I recommend that you separate the fish that lost the eye in a hospital aquarium only with clean dechlorinated water and an aerator so that we do not stress the fish anymore and you are going to put methylene blue at a rate of 1 drop for every 10 liters of water in the hospital aquarium, it is important that it is in the hospital aquarium remember that we should not add methylene blue in the main aquarium since it ends with beneficial bacteria, the fish must regain its activity and live a normal life without an eye of that do not worry.