What inverts do you have? They kinda look like baby snails. But i could be very wrong i dont see a lot of detail.
Given their size look up amphipods, see if match what your seeing.
Cant get any better pics using my s9 plus. They are on my rocks, glass, frag plugs but none on the corals itself at all. So im hoping they are copepods. They are so small like the point of a small needle. Just noticed them after cleaning my glass earlier.