A small catfish from Petsmart has a white spot on its head what is it?

- Protozoan parasite that affects freshwater fish.

- Also known as "white spot disease" due to the small, white spots it causes on the fish's body, including the head.

- Highly contagious and can spread rapidly through an aquarium.

- Easily visible to the naked eye as small, raised white dots that look like grains of salt on the fish's skin and fins.

- Causes skin irritation, discomfort, and gill damage, leading to difficulty breathing and impaired swimming ability.

- Highly infectious, and untreated cases can lead to secondary bacterial or fungal infections.

- Treatment involves raising the water temperature to disrupt the parasite's life cycle and administering appropriate medications.