Aquarium Fish Medications

Fish and other animals are subject to a wide spectrum of diseases. Fish can be affected by water temperature, pH (acidity), osmotic pressures, and dissolved gases.

Ich (ichthyophthiriasis) is one of the most prevalent diseases of fish. It is caused by a microscopic protozoan that causes white spots in the skin and gills of the fish. Alteration of the protective skin of the fish by ich allows opportunistic bacteria or fungi for invasion and the fish can die from secondary causes. The best control of ich is prevention. New plants and fish can introduce unsuspected ich.