Guide Diseases Aquarium Fish Most Common

An aquarium is an ecosystem very wise, it works thanks to some very delicate balances that must be constantly monitored. At the time that some of the pieces of the puzzle are not fully seated problems arise, Left alone and when not on time, disease appears fish. Sometimes the cause of fish disease is indirect: stress, the poor quality of water, nutritional deficiencies or overcrowding, They are the trigger for a disease appears. There is potentially dangerous situations: introducing new specimens in the aquarium, without having passed a quarantine period. Before introducing a new copy, we have it at the least four days in an aquarium isolated, to avoid having some kind of disease that could spread to the rest of the aquarium.

Diseases of freshwater fish most common

Most Diseases cold water fish, are common diseases tropical fish, although some, because the temperature of the water can develop better or worse. The most common diseases in aquarium fish They are produced by:

  • vermin
  • Mushrooms
  • bacteria
  • Virus

Diseases caused by parasites

When fish are attacked by parasites often lose appetite, They are become more inactive and in some cases they rub against the walls of the aquarium or decorative elements. We will know that we are facing the attack of a parasite, why We appreciate morphological changes: excess mucus on the skin, spots and in some cases, worms unaesthetic. should start treatment as soon as possible with the right medicine, to avoid the worst possible outcome: the death of the fish.

White Point

The white spot is a very common disease among aquarium fish. It is caused by a protozoan attack is called Ichthyophthirius multifilis, and as I understood, It is so common, almost all fish living in aquariums at some point have been in contact with this disease. One of the reasons that explains why some fish are not attacked, whereas others, It has to do with your health, their food and the quality of the water in which they live. Sí­ntomas We can see that the white spot disease is attacking our fish, why fish are covered with some white spots all over the body, especially their gills. Fish are becoming increasingly nervous, swim quickly and rubbed onto any surface, with the intention of relief. If left untreated, they begin to suffer breathing difficulties, They lose their appetite and die. Treatment Fish should be treated with appropriate medications to eliminate the parasite. The most effective are formalin and malachite green. The treatment usually takes about seven days, during which we removing the active carbon filter, if we have given and we must improve their nutrition, to display stronger. Learn more about this disease and its treatment: white dot on aquarium fish
JBL treatment for whiteheads

Against white spot and other ectoparasites

worm Lernaea

The worm Lernaea attacks introducing fish head inside the fish leaving the rest of his body was, why are some wisps visible hanging from the fish. It is a disease very frequent in cold water fish (is a very common disease in Goldfish), but also attacks other more tropical as cichlids or nándidos. Sí­ntomas The first thing you will see is that the fish is rubbed against the walls of the aquarium, and against all the decorative elements. If we look, see how your skin is inflamed and hang yarns, which they are the body of worms. Sometimes the scales also rise, lose weight from lack of appetite and bleeding may appear on the skin. Treatment The first is to put the quarantine infected fish, then we must deal with the right drugs to weaken the parasite, for example, with Metriponate. If the parasite does not appear by itself, we must eliminate one by one with tweezers, with care to completely remove the worm and not leave the head in the fish, since it would be very damaging and would not remove the problem.


It is common for some fish such as cichlids (usually discus fish) and some anabantids or laberíntidos, possess a parasite ingested through food, called hexamita. This flagellate protozoan remains to live in your digestive tract. It is usually harmless to fish, but in stressful situations, environmental or food misalignments, this parasite becomes a real problem undermining your health. Sí­ntomas When the parasite begins to undermine the health of the fish, one can observe its color darkens and begins to lose weight in the belly. They lose their appetite and produce pale, gelatinous stool. In an advanced state of the disease, show extreme thinness and holes in the head (the holes disease), They are destroyed because of the muscles. the ultimate, if measures are not taken, It is the death of the specimen. Treatment There is no treatment one hundred% effective, even if antibiotic treatments as Dimetridazole and metronidazole have been effective. Must be dissolved in water and make continuous treatment in time, until complete recovery.
Cupramine for external parasites

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Cupramine for external parasites

  • Treatment copper external parasites
  • Active low concentration (no precipitate)
  • Amina bound so it is not as toxic to fish

Fungal diseases in cold water fish and tropical fish

Fungal diseases go quite unnoticed at first, since we have no physical evidence of the disease at the beginning. We know that something happens to our fish because his attitude has changed, They are behaving differently from the routine. Eventually if physical changes occur, fungus gets to the skin surface and is seen as a cotton bolls. there as 35 different species of aquatic fungi, although they are two genres that usually attack aquarium fish: Saprolegnia Y Achlya. No matter know or recognize what that is attacking our fish, because the symptoms are also related and treatment. Sí­ntomas Fungi attack when aquarium fish a weakening occurs mucosa overlying, which may be due to various circumstances, as poor water quality caused by increased nitrate, or weakness of the exemplary for other diseases. Sometimes fungus attacks occur after suffering the white point, or any type of bacterial attack. The first symptom is a change of behavior of the fish. At that time we should carefully observe your entire body, to find out what happens. In one or two days, the fungus begins to grow outwards, we can see small white spots, which then will become as cottony flakes or long filaments resembling wool, depending on the type of fungus. Treatment of mushrooms in the aquarium To treat fungi in the aquarium, when in its initial phase, you can do two treatments: one topic addressed to locally treat the affected fish, if we know where the fungus is located, and one for make medicinal baths. In the first we will use potassium dichromate or potassium permanganate, applying directly to the affected area. We use a solution of the product in water. Second treatment use methylene blue dissolved in water, we will bathrooms, which we will join with water baths with coarse salt. Once the mushrooms are visible, use an aquarium-nursing, they disband tripaflavina to treat fish. If the fungus affected the most fish, should remove all the decorative elements and disinfect. It disinfects the aquarium commercial fungicides, green malachite.

Antifungal and antibacterial

  • It contains a (1) bottle antibacterial antibacterial and antifungal Betta insect and fungus remedy 1,7 ounces
  • Cure bacterial infections, repair damaged fins, ulcers and open wounds and promotes the growth of fins
  • Fish treats newly introduced to reduce the risk of an outbreak of disease and heal wounds and tissue damage.
  • Contiene melaleuca, a variety of tea tree.

Aquarium diseases caused by bacteria

The infectious diseases caused by bacteria usually they detected because fish become inactive, lose coloration, show frayed flaps, they are the body swells, They are clouding the eyes, Abscesses appear, redness or swelling of the fins and breathlessness. A wounded fish may be affected by bacteria, why should tread carefully, as well as other aquarium fish, that may be affected by the product that we use for healing.


The exophtalmia fish is easy to recognize, as Slimming fish a lot and one or both his eyes out of their sockets. His eyes swell inordinately, why They will swell nodules present behind the eyeball. The cause is a bacterial sepsis or who have contracted tuberculosis. You fish often suffer from these infections when conditional of the aquarium are not good and the quality of water has deteriorated much. Treatment The first thing to do is improve the conditions of the aquarium, And in second place It can be treated with an antibiotic such as chloramphenicol, either through food or bathrooms separately performing fish or fish affected. Treatment is slow. If the fish are suffering from tuberculosis there is no cure. There will be no choice but to remove the affected fish.

Dropsy in fish

La Hidropesia is one by which fish retain fluid in the body disease, the body are swollen and in severe cases, We see as flakes protrude from the tip-shaped body. Usually a sign that They have malfunction of your intestines, or also have kidney failure. The causes are diverse, like a inadequate diet, poor quality of water from the aquarium and also an attack by viruses or bacteria. Treatment The first thing to do is separate copy of the rest afflicted, so that there is no possibility of contagion. Not an easy disease to cure and some copies will not recover. We must palliative treatment After he watches. If we believe that the problem is food, we can make fast for two or three days, improve the quality of water and finally antibiotics will supply, as metronidazole and prednisone. Learn more about dropsy in aquarium fish: Hidropesí­a.

Treatment for intestinal bacteria

  • Medicines for decorative fish healthy intestinal parasites flagellaten and other bowel einzellige
  • Effective against bacteria Velvet Disease (writers Oodinium pillulare)
  • Available in the following packages: 10 ml o 50 ml

Finned fishes damaged

The fin or fins disease podedumbre They are not seen in its initial state, only when the disease progresses easily seen. The fins will begin to show frayed, routes, games or the worst, disintegrated. If no treatment is performed, the disease progresses to involve the whole body. It is often caused by bacteria in aquariums in poor condition, and it is easy to spread to all its members. Treatment Although the best treatment is preventive keeping the aquarium in good condition, once that occurs we must act antibacterials broad spectrum (chlortetracycline, Nifurpirinol and methylene blue), In addition to improving the situation of the aquarium. It is convenient to get better the diet of fish during treatment.

Fish diseases caused by viruses aquarium

Virus diseases They are almost impossible to detect and treat. While for the rest of fungal diseases, bacteria or parasites is a great documentation and treatments, for viruses not. To prevent the occurrence of any virus attack in the aquarium, whenever we buy new copies, They have to go through the quarantine period. In the event that we are clear that one of our fish has been attacked by a virus, Maybe it is put in a quarantine tank, watch and take it to an expert we can certify that so. Probably we have to get rid of the copy.

Quarantine tank

A quarantine tank is nothing more than a small fishbowl, but it must be equipped with everything needed for a few days in fish is acceptable terms. The water must come from our aquarium, for what cycling It is not a problem. add a based substrate gravel or sand and decoration may include some artificial plant, and a rock that serves as a refuge for the fish or fish. The aquarium should have its filter, which can be very basic, and if we will put tropical fish, should have its termocalentador suitable temperature regulating. No need to have lighting, with environmental will be sufficient. As for the size, we can use an aquarium from 12 Y 20 liters, a nano aquarium.