Treat Fungal Infections in Fish

How to Treat Fungal Infections in Fish

If you suspect your fish is sick, it could because of a fungal infection. Fungal infections, such as Saprolegnia and Achyla infections, are common diseases in fish that typically occur if the fish has an injury or illness that weakens its immune system. They are highly contagious and can be fatal if not properly treated, so it’s important to treat your fish quickly and thoroughly. If your fish gets a fungal infection, it’s probably not life threatening but it’s important to treat it so you can keep your fish healthy and happy.1

Treating Your Fish Set up a treatment tank.

Get a small tank where your fish will have enough space to move around a bit. Add water and bring it up the temperature to 70–77 °F 21–25 °C with an aquarium heater. Test and treat the water to eliminate any chlorine in the water and to make sure the PH balance is correct, just as you would with a ium"permanent aquarium. There you can monitor their behavior and treat it without polluting the rest of your aquarium. The treatment tank does not need to be as big as your permanent tank. A tank that is 10–20 gallons 38–76 L is typically plenty big for pet fish. The fish will only be there during treatment, which could be a few weeks, so they don’t need as much room as normal. Separate any infected fish from uninfected fish.

Take the sick fish out of their tank gently and put them in the treatment tank. Since fungal infections are extremely contagious, move your sick fish into the treatment tank as soon as possible. Even if all of your fish are infected, you should treat them in a temporary tank so that you can give their permanent tank a thorough cleaning while you are treating them. Even if all of your fish are infected, you should treat them in a temporary tank so that you can give their permanent tank a thorough cleaning while you are treating them.Add a fungal treatment to the water.

Purchase a fungal treatment from If you suspect your fish is sick, it could because of a fungal infection. Fungal infections, such as Saprolegnia and Achyla infections, are common diseases in fish that typically occur if the fish has an injury or illness that weakens its immune system. They are highly contagious and can be fatal if not properly treated, so it’s important to treat your fish quickly and thoroughly. If your fish gets a fungal infection, it’s probably not life threatening but it’s important to treat it so you can keep your fish healthy and happy.