Whitespot (Ichthyophtirius) is a very common disease in
tropical fish. It most often occurs in new tanks or fish
that have been recently added to a tank.
If your fish has whitespot it will have white spots primarily
on their fins but also on their body. The fish will almost
look like it has grains of salt covering its body. This
is usually a result of poor water quality. You may wish
to take a sample of the water from your aquarium to a pet
store to have the quality checked.
Because of the commonality of this disease you should not
have much problem finding medication at your local pet store.
Increasing the temperature in the aquarium can also help
alleviate this condition as it will speed up the cycle of
the parasites. Be careful not to raise the temperature too
high or it may get out of the acceptable range of your fish.
You can take a look at our tropical
fish info sheets for more information regarding temperature
requirements of your fish species.