Symptoms:

• White spots on fish that look like grains of salt
• Large white spots on fish, not fluffy like cotton

What is it?

Ichthyophthirius multifiliis also known as ick/ich is a ciliated protozoan that lives in most water. It is a single celled organism.

How did it get there?

Harsh changes in temperature can commonly cause ich. Other stressful situations might trigger an ich infection as well.

Treatment

There are many commercial ich medications, and most any pet store will carry a medication as ich is a very common disease for aquarium fish.

Prevention

• Keeping your water at a steady temperature and the water clean will help protect against ich.