Treat fungus and bacterial infections quickly and safely with API Pimafix for Treating Fungal Infections in Fish. Bacterial diseases are caused mostly by dirty aquarium conditions and adding infected fish. Fish that are injured and have open wounds are especially susceptible, even in seemingly clean tanks. Fungal infections, like cottony growth, and bacterial infections, like fin and tail rot, destroy tissue and other organs. If left untreated, they can cause fish loss. API Pimafix for Treating Fungal Infections in Fish is an all-natural, broad spectrum treatment made from the antifungal properties of the West Indian Bay tree. It is formulated to not only treat disease, but develop resistance. Safe for reef aquariums and live plants, it will not adversely affect the biological filter, alter pH or discolor water.