The Common Diseases In Freshwater Fish

Freshwater fish are sometimes affected by killer diseases which are caused by bacteria, parasites, or fungi. Diseases come when there is poor management of fish. Such as failure to maintain cleanliness in your pond. Tilapia and catfish are species which do well in warm water are mostly affected by epizootic ulcerative syndrome (EUS) while fish which live in cold water suffer bacterial cold-water diseases (BCWD) and rainbow trout fry syndrome (RTFS). Rainbow trout has severe effects and transmits viral hemorrhagic septicemia (VHS) and Infectious pancreatic necrosis (IPN) which leads to the death of fish.

Signs Of Diseases In Fish

A good keeper should be observant so that he can easily notice any change that occurs in the aquarium. Sometime you may see abnormal signs in your fish, and the most common symptoms are: reduction in speed while swimming, some fish swim on the surface and avoid going underground, fish may change in color, and sometimes fish swim on their side. With the help of this sign, you will be able to conclude that there is a disease which is affecting the fish. Here are 5 most common diseases which might alter the health of your fish.

Fin And Tail Rot

If you allow your fish to live in an inferior world, the infections will affect your fish. The source of infection is Flavobacterium. It damages the fins and white substance coat the tip of fins and tail. It can cause mortality rate, and it is recommended to provide a healthy environment for the fish. Also, you can apply Chloramine-T or Hyamine to treat the water to kill any bacteria present.

Bacterial Gill Disease (BGD)

The primary cause of this infection is Flavobacterium. It damages the gills mostly when the level of ammonia in the water is high. Poor water quality and high temperature can cause this bacterial disease. The best way to cope up with this infection is by providing clean water and also ensure the temperature is not so high for the fish. Hyamine can be used to treat the water so that it will destroy the bacteria cycle.


The disease affects the skin and gills, and it caused by a parasite. The fish suffer a lot, and you will observe excess mucus, ulcers on the fins and flashing and rubbing. Fish can die quickly because the respiratory system is affected hence breathing problem. Make sure the water is free from pollutant, or you can treat water by use of salt and Chloramine-T.

Cotton Wool Disease

It is caused by fungi and is widely spread to the environment with low temperature. It generates a lot of problems in the water, making the fish uncomfortable. The fungus covers the whole body of a fish creating a white tuft. It can be controlled by removing any dead fish in the water, avoid creating stress to your fish when fishing, care should be provided to prevent injuries to the fish.

White Spot-Ich

The high concentration of algae in water causes fish breathing problems. They prevent light penetration in the water and fish experience a problem of accessing major nutrients. It can be identified easily where you find water is red, blue-green, or brown. Algae block the gills and supply of oxygen in the fish is affected. The consumer taste can also be affected since algae affect the quality of the meat.

How To Treat Fish Diseas

It is good to use the appropriate dose of the drug to avoid poisoning the fish, which can cause death. Also, when you are medicating the fish, it is good first to test the drug using a few fish so that you can check the effect of medication to the fish. This will prevent experiencing a loss if you administer a drug which is harmful to your fish.

With this knowledge of diseases affecting fish, you will be able to manage your fish while making sure they remain healthy.

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