Don't see anything in the first pic but the second pic I see what is probably aiptasia. Look up some pics and compare. I was lucky and got a peppermint shrimp that has a taste for it! The 3-4 I had in the tank were gone within a day or so.
Thanks for all the responses! Def was one. I couldn't actually pick all of it off so I pretty much had to squash and scrape it. Def got it but hope that wasn't a bad idea lol. Guess it hitchhiked on with some inverts.
I think they spread when you do that.. not sure though. You might look into getting a peppermint shrimp if you get a break out.