Fungus is fluffy and usually grows between or on the red fluffy parts of the gills, this axy just looks like it has very shiny gill tips, like whats on it's fingers. If the fungus is just so small we can't see it in the picture, it's sure to go away on its own. Just keep the tank clean and it'll be fine. Maybe share a close up picture of the gills since it's hard to tell from these images alone.