Yes. Just like you, fish can get sick
and may need special attention.
Poor water conditions, rapid temperature
changes, bad food, introducing an already
sick fish to your tank or any number of
things could cause your fish to become sick.

Signs that your fish are sick may include
inactivity, swimming on its side, swelling of
the gills, spots, lumps, and even bumps.

If you think you might have a sick fish the
best thing to do is to discuss the problem
with your local pet store clerk and let them
recommend a medication that will
help your fish feel better.