Tuesday, 23 April 2024

Diseases affecting goldfish

26 April 2021

Veil (goldfish, veils) - ryukin. Ornamental varieties of veil fish have been bred since 960 in China. There are many very colourful species of these fish. They are very agile fish with very gentle disposition. At first glance their fins seem to be very big in comparison with their small head. The length of the fins determines the unusual features of this species. When motionless, the wavy caudal fin hangs very loosely. This is allowed by the flexible and thin fin rays. The normal dorsal fin sticks out vertically. Welons are presented on numerous aquarium exhibitions. The basic evaluation is the fin and body proportions. Due to fast metabolism and size it is absolutely not recommended to keep this fish in tanks with balls. Fish in such tanks get very tired. In normal conditions it lives very long. The most beautiful are in about the third or fourth year of life. The sex can be recognized only before spawning. During this period the male's gills are covered with white warts.



This disease occurs in black telescopes. It is characterized by the appearance of cloudy red and irregular spots on the body, which after some time spread on the whole body of the fish. Translating this, the fish looks like one that has been wet in dirty water and then dried. The palms look like dirty streaks on the fins and on the body.

The parasite at temperatures of thirty degrees Celsius and above simply dies. For fish that are sensitive to high temperatures use

Table salt 2g per liter of water, trypaflavin 10 mg per liter of water or a bath for ten hours. You can also use a bath for ten or forty-eight hours, or malachite green according to the package insert.

CRAWL LICE - is also called fish lice, as well as other parasites

It is a crustacean of small size. It leads a parasitic life. It is usually transferred with new fish.

The appearance of the beetle resembles that of a stingray that is a few millimetres long, but very tiny. Fish that are attacked by this parasite very often rub against other objects in the tank. When you look closely at such a fish you will notice the intruder.The treatment itself is based on manual removal of the parasite from the fish. Fish should be fished out, then placed on a wet cloth and removed with tweezers. The place after the parasite should be disinfected in the same way as with wounds.


  • The fish moves in a very strange and uncontrollable way.
  • Bloody spots appear at the base of the gills and fins.
  • The scales start to separate from the body and also the eyes are blown out.
  • Additionally, the fish becomes bloated and fat.

These are symptoms that indicate poor kidney function. This causes the fish to retain water in its body. The cause is definitely organic water contamination. In the beginning a bath in cyprianopur or in baktopur direct can help. If this does not help, the fish must be put to sleep.



If there are no visible symptoms of disease, but the fish behaves strangely, e.g. rubs against objects and gravel, swims under the surface and catches air, it is definitely a protozoan attack. When symptoms are already noticeable, a long bath in FMC may help. If the infection is far advanced, the fish must be put to sleep, because there is no salvation. The home remedy is a short bath of fifteen to thirty minutes in a saline solution. If you notice that the fish weakens in the water, stop the treatment immediately.