There are a number of common diseases for fish that are easily
treated. The most common is "Ich" or "ick", which
comes from the Latin word for fish ("ich"). In this disease, the
fish develops white spots over its body. It is also known as White Spot
Disease. Follow the links for a discussion on curing:
For an excellent detailed listing of types of diseases and pharmaceutical
treatments, link to National Fish
Comments by LittleHippyGirl:
Treating ailments really depends on the species of fish and
what symptoms they are showing. The first thing anyone should do is test the
water quality. If you think that it is either a bacterial or fungal infection,
treat them separately with jungle labs fungus clear. It fights both types.
Combining medications can be dangerous unless the box clearly says they can mix.
Salt is a good general medication because it fights types of parasitic,
bacterial and fungal infections. The downside is that not all fish can deal with
salt. Salt dips and baths have to be stronger since they are quick also. Tetras,
young and small fish, catfish, and any "scaless" fish will not do well
with salt. There are others too, but these are more general.