Angelfish diseases

Angelfish is a beautiful aquarium fish with excellent health and interesting behavior. But its content implies the creation of favorable conditions, proper nutrition. Otherwise, the fish will develop infectious and foodborne diseases. If you do not start treatment in a timely manner, the angelfish will die.

Diseases of the Angelfish

Often the angelfish has:

  • worms, microspores, protozoa parasites;
  • fin rot, tuberculosis, Pseudomonas aeruginosa;
  • Glugea, Ichthyophonus;
  • hexamita – food poisoning.

Reference! Many types of diseases are treated successfully. But severe forms – tuberculosis, fin rot and other infections – often lead to death.

If you see angelfish fighting each other it may not be a disease but something different, I recommend you to look at this article.

Description of external signs, reasons and recommendations for what to do

If the fish looks drooping and practically does not move, then it is important to find an explanation for this behavior. The following signs will help determine the presence of the disease and begin treatment on time.

Bulging eye

This is tuberculosis. Unfortunately, it is not treated. There are additional signs:

  • loss of color (angelfish becomes dull, slightly “dusty”);
  • exhaustion;
  • redness, cloudiness, bulging of one or two eyes;
  • inactivity.

The reasons for the appearance are in the following process. There is a certain rate of pathogenic microorganisms in the aquarium. When their balance is disturbed, harmful bacteria begin to multiply actively and cause tuberculosis.

The solution to the problem is to remove the fish from the aquarium. Other fish are fed live food for about two weeks. Additionally, they change the water, heat the soil.

Reference! If the anglerfish is not destroyed, then it will die in a hard-to-reach shelter. The process of decomposition will begin and the pathogens of tuberculosis will move into the organisms of other fish.

The fish swims on the side

This is glugea, another scary virus caused by the sporozoa Microsporidia. The disease is characterized by the appearance of cysts in various organs and tissues of the body. Signs:

  • scalar swims on its side;
  • unilateral or bilateral bulging is observed;
  • the appearance of cone-shaped protrusions on the body.

The reason for the appearance of such a virus is feeding the fish with live food from a natural reservoir. In this case, the owner of the fish himself is to blame. The fungus is activated only with weakened immunity. If a person does not change the water, allows it to be cooled, and does not promptly remove dead animals, then glugea cannot be avoided.

This disease cannot be cured. Experts advise to destroy all the inhabitants of the aquarium, plants. Boil the soil and decorations, and the container itself must be treated with disinfectants.

Attention! Glugea in its symptoms resembles Ichthyophonus and mycobacteriosis. It is very difficult to detect spores of microorganisms. But you should not take risks and try to cure the fish, since in any case the process is irreversible.

Swollen belly

These are worms, but already in an advanced stage. Additionally, wounds appear on the body due to the release of adult parasites from the body. Associated signs:

  • inactivity;
  • refusal to eat;
  • rapid breathing;
  • exhaustion;
  • change in the shade of waste.

It is important to understand that there is no point in treating a sick anglerfish. It will die a few hours or days after the parasites are released. But other fish must be fed with Antipar.

The fish does not eat

If the angelfish refuses to eat, then it is important to determine the signs of a specific disease. It can be any disease listed earlier. After studying the ailment, the fish begin appropriate treatment.

Fin rot

Fin rot is caused by the bacteria Pseudomonas fluorescens. It enters the aquarium along with live food, soil, decor, new fish from the pet store.

This infection can destroy the fins in a short time: they look torn, worn out, injured. In the initial stage, the rot is treated, and in the neglected stage, it goes to the body and completely destroys the pet.


  • the color of the fins has changed to light blue;
  • red stripes appeared on the body;
  • cloudy eyes;
  • breaking off fins;
  • ulcers;
  • loss of appetite.

At an early stage, treatment with Chloramphenicol, Sulfanilamide, Bitsillin-5, Biseptol-480 is acceptable. Apply the drugs strictly according to the instructions.

Reference! After purchase, you should not immediately place the angelfish in a shared aquarium. Better to leave it in an old container filled with store water. Observe quarantine for about 2–3 days. If the fish is not contagious, it’s time to introduce it to new pets.

Red eyes

These are worms. Signs and treatments are described above. The second option is that the newly purchased pet did not have time to adapt to the new habitat. For example, the acidity of the water does not suit him. Therefore, irritation appeared. Advice: contact your veterinarian.


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The Reasons Why Angelfish Die

Floats upside down

This is a severe food poisoning. Caused by the high content of nitrite and nitrate in the water. In addition, the fish makes sharp, incomprehensible movements, from which it is injured. If the owner does not pay any attention to this, then the pets will die from nitrate shock.

It is required to provide high-quality filtration and aeration in the aquarium. Timely purify water from food and faeces residues using a siphon. Perform fluid chemistry tests regularly.

Red gills

This is a sign of a viral infection called rubella. It is very spicy and contagious, causing serious harm to all inhabitants of the aquarium. Signs:

  • the abdomen is covered with red spots;
  • the gills become inflamed and bright red;
  • inflammation of the scales and skin;
  • malfunction of internal organs, due to which the fish stops eating.

Rubella is not fully understood, therefore there is no information about the sources of its occurrence and methods of treatment. The owner should contact a veterinarian who will help to draw up a competent treatment.

Lies at the bottom

This is due to dysfunction of the swim bladder, alkalosis, acidus, Ichthyophonus. Associated symptoms are loss of appetite, exhaustion, inactivity, untidy appearance, slightly bulging eyes.

Often these diseases come from an infectious pet that was recently purchased from a pet store. Here you should call a doctor so that he can assess the general condition of the fish and make a diagnosis. Further, the veterinarian will voice recommendations for treatment.

Reference! Sometimes the angelfish lies at the bottom due to overeating. She swims at an unusual angle, behaves strangely, can lie at the bottom for hours. It is important to follow the recommendations of the fish feed manufacturer.

Clouded eye

There are several explanations for this phenomenon. The first is stress, the second is a lack of vitamin A, and the third is parasites. If the first two causes are correctable, then the presence of worms or protozoa requires some treatment. Associated symptoms:

  • faeces white;
  • inactivity;
  • exhaustion;
  • red cloudy eyes;
  • loss of reaction.

In the early stages of the lesion, you can get by with drugs from the pet store. When the form is running, the fish is destroyed, and the rest are processed with the appropriate compounds. The aquarium is disinfected, the soil is calcined.

Float near the surface of the water

This is hexamita. It affects the intestines and gallbladder. The body is covered with holes, open wounds, ulcers. The fish does not eat, it secretes a white filamentous epithelium, floats near the surface.

Parasites get into the water along with live food, low-quality goods from the pet store. To receive competent recommendations for treatment, you should contact a specialist.

The maintenance of a angelfish is a hard daily work that requires care, compliance with the rules for care. If the fish begins to behave differently, it is worth examining it for possible symptoms. It is better to seek help from a veterinarian who will assess the general condition of the pet and prescribe it correctly