Sasha
Fish Gatherer

During the past couple of days, I noticed that two more white spots developed above his right fin and another on his left fin. He swims fine, has a good appetite and loves the girl platies. I'm concerned that the other fish might get infected, so I'm going to move him into a hospital tank tomorrow. What should I treat him for? Any ideas?

Ammonia - 0
Nitrate - 5.0
Nitrite - 0
pH - 7.0
Temperature - 78 degress F.