Can someone help identify this?

[Humblefish]

So the gobys are the only fish with visible signs and the black Ocellaris clown has literally only 2 visible sugar sized white dots, no other fish are showing signs. I know that the trophont stage is the only time we can see it with the naked eye is it possible the other fish haven't showeee symptoms yet every fish in the tank is eating, not breathing heavy, and acting normal. Should it be spreading to other fish how quickly does it spread?

Ich is relatively "mild" as parasites go. Some fish will show symptoms, some will not. The immune system may adapt well enough to manage the presence of the parasite or even build up immunity.

However, so long as the parasite is lurking in your tank the potential for disaster always exists. I've lived most of my life in South Louisiana, and was able to "manage" ich being in my DTs for years & years. And then the hurricane would come, my tanks would lose power, temperature would rise, and suddenly all the fish would break out & die. It's these "stressor events" that occur which remind us we should have just taken care of the problem long before it turned into a catastrophe. o_O