tank. 75g. almost 3 months old.
Got a clown (have had for almost 2 months) that today has some greyish-brown patches on his left side. Not sure what this is, it seems too patchy to be ich or black ich. Fish wasn't quarantined because he was in the first batch in the tank 2 months ago.
These aren't sharp-edged spots, like ich or black ich, but fuzzy, like smudges, with soft edges. It doesn't seem raised or bumpy, just a discoloration.
The other clown isn't showing this.
He's behaving and eating normally.
They both do seem to be a little darker than usual - that could just be lighting, but their top half, over the last couple days, seems darker, like they look when I first turn on the lights in the morning.
Perhaps something fungal?
Specs: pH 8.2, Ammonia/Nitrite 0, Nitrate 10, temp 80, sg