Aquarium tropical fish and fish diseases


Obesity of internal organs

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Obesity of internal organs

Latin name:
Other names:
Symptoms: An autopsy reveals viscera covered in fat and blood lighter in color, Degeneration of liver, Fish are inert, Bloat, Bloated front part of belly

Sick fish become lethargic, sometimes the front part of the abdomen will become enlarged. Liver degeneration is observed, which causes fishs death. Affected fish may have dropsy which is characterized by abdomen deflation. An autopsy will show viscera covered in fat and blood lighter in color.

The disease is characterized by the formation of fat tissue on viscera (liver, kidneys, heart, outer walls of the intestines). Disease is often caused by overcrowding and by an unvaried diet (especially by dry food). In the majority of cases, sick fish will die.

Insufficient amount of plants or their absence is one of the causes of the disease. Such maintenance and diet cause metabolic disorder. Fish become sensitive to the slightest changes in their surroundings and more susceptible to invasive and infectious diseases.

How to cure:
Disease develops chronically and in the early stages goes unnoticed. Fish feed actively, but they are lethargic. Disease is usually fatal, as impaired fat metabolism is an irreversible process.


To prevent impaired fat metabolism, fish should be provided with optimal maintenance conditions and a balanced diet. Avoid overcrowding the aquarium (fish should be able to swim freely). Do not overfeed your fish (especially with dry food). Plants are essential in the aquarium.

Fish susceptible to the disease/disorder: