https://www.chewy.com/education/fish/general/how-to-treat-a-fish-with-red-spots
Red spot disease (RSD), also known as epizootic ulcerative syndrome (EUS) or mycotic granulomatoses (MG), is a fungal infection that commonly affects freshwater fish. While the term "red spot disease" specifically refers to this fungal infection, it can also describe various conditions that cause red spots on fish, ranging from minor skin irritations to more serious systemic infections.
Symptoms of RSD include reddening of the skin, open sores or ulcers, and skin erosion. Infected fish may show behaviors like reduced appetite, low activity, hiding, and respiratory distress.
Secondary bacterial infections often develop, causing fin rot, color loss, or bloating.
It is crucial to determine the underlying cause, as red spots can result from stress, bacterial or parasitic infections, fungal issues, or toxins like high ammonia levels.
To treat red spot disease, isolating the affected fish is key, especially if the cause is an infection, to prevent spreading.
If poor water quality is the issue, adjusting tank parameters like ammonia or nitrite levels can help the fish recover.
However, for systemic diseases, consulting an aquatic veterinarian is recommended for an accurate diagnosis.
Treatment may involve antibiotics for bacterial infections, praziquantel for parasites, or antifungal treatments like malachite green.
Quarantining sick fish and maintaining good water quality throughout the treatment process is essential.
After the infection has been treated, it is important to remove any remaining medication from the tank and thoroughly clean the hospital tank to prevent further outbreaks.
Chewy editorial team provides all the information you need to accurately diagnose and treat red spot disease, along with important considerations for post treatment care - so you and your fish can get back to a healthy, stress free routine.
