It looks like there is a little bit of fungus growing on my cats nose. Never seen or heard of it before. He seems to ba acting fine. It's a gray/white color. Any ideas? SHould I be concerned? Should I take him to the vet immediately? Please help I am really worried.

Optional Information:
Age: 6; Male; Breed: cat, not sure what breed

Already Tried:
nothing, just noticed it