Goldfish Fungus is a highly contagious goldfish illness. There are many different species of fungus that can infect goldfish. The most common that infect goldfish is Saprolegnia.
Symptoms: Fuzzy White Colored Growth
Injury or poor water conditions can cause the goldfish to be more susceptible. When there is damage for any reason of the mucous layer of the fish skin the fungus spores then enter through this breach of natural protection.
1. Experts treat the infected area with methylene blue and place the fish in a ten day salt bath.
2. Commercial treatments are available at local or on-line pet supply stores. You should treat the entire tank with a fungicidal agent.