I purchased cardinal tetras two weeks ago and noticed a small spot on one in the beginning but thought he had just got scratched on something however several have it now and it's definitely fungus. I have a vampire shrimp, bristlenose pleco, and Kuhli loaches in the aquarium with them however they seem fine. I'm concerned about getting them treated without harming any other fish as well as my live plants. Does anyone know a safe treatment option that won't harm the fish or plants and won't stain anything as well.