I think so anyway...I have a green marble bf male that has spots like that...they are almost shaped like diamonds. They started out gray like those then turned bright blue and the spots just keep on coming!
If you don't see any stringiness or fuzziness, and he is still eating and swimming about normally, their is no need to worry. Like I said, keep an eye on his coloration, he could begin turning colors on you!
My boy Eos was dark black with a little blue in his fins when I bought him. Today he is bright red and metallic blue. He is constantly changing colors and will get grey patches on him regularly before he does. Here are some pics to demonstrate what I mean:
First pic = Eos the day I bought him. Look how dark he is!
Second pic = See the grey appearing on his head? I FREAKED when I saw this ... turns out ... he's a marble!