Didn't qt as i don't have qt. Dropped in eats very good no itching no acting weird. Spot can be seen on his body and fins.
Can it be ich?
Tough to see clearly, some of the spots are too diffuse to confirm as ich, but I did see some suspicious spots in the second video.
As said, if it is ich, successful treatment typically relies on quick action; moving all of the fish to a treatment tank and dosing with copper power or coppersafe for 30 days.
There are many "reef safe" ich remedies out there. The reason why is that the proper treatment of ich takes effort, time and money. The market demands a product, so quick fixes abound, but often don't work. There is NO oversight for aquarium disease products as long as they don't contain products that can harm humans. There are a coupled of reef safe medications that have worked in a few cases: Ruby Reef Rally Pro and Polyp Lab Medic. However, I still hear a large number of failures with those products.
People try adding "miracle cures" and when they fail, they try copper. Trouble is, by that time, the disease is so far advanced that the copper fails also. This is very discouraging when it happens.
I would wait another day to try and confirm that this is ich - look for the number of spots to change (more spots or even less spots) as well as changing location on the fish. If you see that, it pretty much confirms ich. If the same spots are in the same location for more than 48 hours, it isn't ich.
Jay