We are doing a fish-in cycle with Danios (we are planning to have a large school of Danios once the tank get's established so I'm getting throw away fish just to cycle). We got 9 of them last Tuesday. On Sunday I noticed a white spot on one of the big ones. Just one spot and I'd almost call it more of a discoloration. It doesn't look like the pictures I have seen of Ich - but I have also never experienced Ich first-hand.
I noticed this for the first time Sunday morning. The spot has not changed at all and I have kept close eye on the other 8 danios - no spots on any of them. They are the only inhabitants of a 75 gallon tank. If it matters, the parameters are pH - 8.2, ammonia, nitites and nitrates are all still reading 0.
Is it Ich?