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Golden Fishes Diseases – Symptoms | Treatments | Signs

belly pops up

Animal diseases

Golden Fishes Diseases – Symptoms | Treatments | Signs

Goldfish diseases are accompanied by the same symptoms as other aquarium fish. The article provides frequently encountered signs of disease and treatment methods. If you are not sure about the diagnosis, do not rush to take medication. First, check the water and normalize the conditions of detention.

Swims up belly

The fish is alive and quicker breathing, and the abdomen increases in size. If a goldfish swims up with its belly, then the animal is prone to obesity and vulnerable to infections that cause swimming bladder problems. Reasons for swimming fish on the back:

  1. Monotonous food.
  2. Binge eating. Pour the food 1-2 times a day with pinches, which pets can cope with in a couple of minutes. Remove any residual feed immediately. If the fish systematically overeats, go on a hunger strike for 3 days, then feed them green peas without skin.
  3. Excess protein feed. Goldfish are herbivorous. The food system of cyprinids does not break down animal proteins. Feed your pets a balanced goldfish food, sometimes serve scalded lettuce, peas, broccoli or cucumbers. Live and frozen feeds make up 20–30% of the diet, plant foods – 70–80%.
  4. Dropsy is a common disease among golden carps. It is characterized by swelling, due to which the pet turns upside down. Check the water parameters and the amount of nitrites, if necessary, change the liquid and change the parameters. Transplant the diseased individual into a separate aquarium. Mix chloramphenicol with food (250 mg per 25 g of feed) or dissolve the antibiotic in water (10 mg per 1 l).
  5. The disease. Put the sick pet down. Check the concentration of nitrite and ammonia, inspect the animal. Find out why a goldfish swims unnaturally. Swimming belly up is one of the signs of mycobacteriosis (tuberculosis). Other signs: abdominal swelling, floats at the surface, eye-glaze, curvature of the spine, tarnishing of the color, desire to hide. Symptoms come in different combinations. The disease is rarely treatable. Change the water daily for 2 weeks, add kanamycin (30 mg per 1 liter).

Lies at the bottom

A goldfish lies at the bottom of the aquarium for various reasons:

  1. Stress. The recently acquired goldfish is not used to a new aquarium, lies or hides among the shelters. Observe your pet for a couple of days. The situation will not change in case of illness. Make sure that the aquarium does not have constant sources of stress in the form of overpopulation or pugnacious neighbors.
  2. Lack of free space. Gold carp should be in an aquarium with a volume of at least 40-50 liters, depending on the particular species.
  3. Poisoning. Rare water changes and malfunctioning filters can lead to contamination.
  4. Heat. Goldfish are comfortable at 18–22 degrees. If there is no thermometer, get one. The result with less error is shown by glass thermometers and electronic.
  5. Alkalosis or acidosis are diseases caused by inappropriate pH. Goldfish are kept at pH 6–8. If the parameters do not match, smoothly align them to the permissible values. Other signs of these diseases: protruding fins, spasms, impaired coordination, restless behavior, discoloration.
  6. Injuries caused by unfriendly neighbors.
  7. Ichthyophthyroidism (“semolina” or “white point disease”). Other signs: a goldfish itches on objects in the aquarium, loses its appetite, becomes lethargic, hides, breathes faster, white grains are visible on the body. Treat the goldfish with malachite green based pet shop preparations as instructed. An alternative is biomycin (1.4 g per 100 l). Apply 1-2 times a week, increasing aeration.
  8. Mycobacteriosis.

Turned white

Color change is a natural phenomenon for goldfish up to 2 years old. With a decrease in temperature, pets become paler. The shade of the soil also affects the color, white soil leads to the natural lightening of the color. Strange behavior and blanching caused by disease and improper content:

  1. Ichthyophthyroidism.
  2. Not enough nutritious food.
  3. “Cotton disease.” The animal behaves uneasily, itches, a plaque or growths resembling cotton wool appear on the body. Eliminate sources of stress, check water parameters. Use products containing phenoxyethanol.
  4. Kostiosis. It is accompanied by loss of appetite, itching, the appearance of white or gray plaque. It is brought in with infected individuals and live food. Treat with copper sulfate (1 g per 10 l), place a goldfish in the solution for 10 minutes. Repeat the procedure for 5 days. Acceptable salt treatment. Immerse the goldfish in the bath (25 g per 10 l) for 15 minutes. in a week.
turned white


Tail damage indicates disease:

  1. Fin rot. In goldfish, red streaks appear, the edges are reduced, the fins may blacken. Place the golden carp in a salt water bath (1 teaspoon per 3 liters) for half an hour. Perform the procedure once a day for a couple of weeks. Effective use of drugs based on malachite greens and methylene blue.
  2. Flexibacteriosis (columnariosis). Appears in dirty and too warm water. The initial stage of the disease can be treated. In addition to discoloration of the tail with subsequent destruction, there is an erosion of the scales in the tail, blanching of the edges of the scales, lightening of the mouth area and stiffness of movements. Immerse the goldfish in the baths with a pink solution of potassium permanganate for 10-15 minutes for 3-5 days. You can use chloramphenicol (50 mg per 3 l), adding every other day for a week. After that, add kanamycin (1 g per 20 l) according to a similar scheme.

Scales fall off and fall off

The scales of a goldfish fall off as a result of:

  1. Excess nitrite. Change the water and add air conditioning.
  2. Neighborhood with catfish. Soma sticks damage the scales. Sometimes the problem is solved by increasing the amount of plant food, but it is better to plant the pets.
  3. Lepidortosis. In certain parts of the body, scales rise and fall. The disease is introduced with aquarium animals that have not been quarantined and soil from natural reservoirs. Treat carps with biomycin (1.4 g per 100 l) by adding the solution weekly for a month. You can use the baths with the main purple. Prepare the mother liquor (100 mg per 1 liter), dilute 10-15 ml of the resulting solution in 10 liters of water. Place the diseased individual in the solution for 4 days.
  4. Ichthyosporidiosis. The disease is indicated by intermittent swimming, cramps, lying on the bottom on the side, panting, bulging eyes, loss of scales and bruising. The disease is difficult to cure. Dilute phenoxytol in water in a ratio of 1: 100. Pour the resulting solution into the aquarium (10–20 ml of solution per 1 liter) for 2 weeks.
  5. Tuberculosis. In golden carps, a sign of mycobacteriosis is loss of scales without ruffling.
flakes fall off

Bitten Fins

Wrongly chosen neighbors bite fins to goldfish. Veil varieties are especially prone to this. Injuries are caused by barbs, cichlids, cockerels and thorns. With minor injuries, the tail is restored quickly. At this time, pay increased attention to the victim, since with water pollution, a fungal infection may develop in the injured area. If the tail or fin is bitten off to the base, they will not grow back.

Swims on its side

If a goldfish swims on its side or upside down, but is alive and breathing, this indicates problems with the swimming bladder. Review the diet and check the water, examine the skin and fins. Perhaps the goldfish has an infectious disease.

swims on its side

Black fins

Darkening of the fins caused by:

  1. Nitrogen poisoning. The body is covered with black spots, the animal breathes faster and keeps near the surface. Strengthen aeration and replace to 30% of water. The introduction of air conditioners that neutralize harmful compounds will help. Restart the aquarium. If there are few or no plants in the aquarium, plant them. The soil layer must be at least 5 cm.
  2. Fin rot.
black fins

Growth on the head

There are breeds of golden fish with a “cap” on their heads (oranda, red cap, pearl with a crown). The growth appears in 3-4 months, sometimes unexpectedly for the aquarist. If you have a gold carp of a different breed, a head formation is caused by:

  1. The appearance of a tumor. It is not amenable to treatment, but under good conditions, the animal will live a long time.
  2. Injury
  3. Unsuitable conditions.

Red spots

Causes of red spots:

  1. Rubella is the collective name for spring viremia of carp, aeromonosis, pseudomonosis and vibriosis – diseases with similar manifestations. Accompanied by hemorrhages, especially in the head area. Other signs: the appearance of ulcers, bulging eyes, swollen abdomen. Treat in a separate container. It will take human leukocyte interferon (1 ampoule per 35 l) in combination with chloramphenicol (2.5 g per 100 l). Pay in a day until the condition improves. Replace a third of the water at least 1-2 times a week. Chloramphenicol (250 mg per 25 g of feed) or furazolidone (0.5 g per 25 g of feed) also helps. Feed the mixture for 6 days. Provide continuous aeration during treatment.
  2. Skin and gill trematodes. Animals behave uneasily, try to scratch on objects, fins are often pressed, red spots appear on the body, the skin is covered with mucus. Treat with special means against parasites or using baths with potassium permanganate.
  3. Ammonia poisoning.

Bulging eyes

Bug-eyed and the appearance of a whitish plaque in the eyes accompanies the disease:

  1. ichthyosporidiosis;
  2. rubella;
  3. tuberculosis.
bulging eyes

Inspect the skin and fins, observe the behavior of the inhabitants of the aquarium. Check water parameters. Changes in one eye usually indicate injury.

Are dying

Be responsible for cleaning the aquarium. You should know the parameters of water and check it with tests. If the goldfish dies, immediately remove the dead pet from the tank and inspect the other inhabitants of the aquarium. Before starting a fish, get acquainted with the features of starting a pond, feeding, compatibility and maintenance of the aquarium. Goldfish die for the following reasons:

  1. water pollution;
  2. unsuitable conditions;
  3. lack of quarantine for new fish;
  4. neglect of feed and plant processing;
  5. overfeeding.


Remember that goldfish are not suitable for small tanks, they need clean water and a lot of free space. Beginners wishing to start a small aquarium can place guppies or fighting fish in it.

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