It is almost certainly not ich and it is most likely scar tissue from fin ray fracture, as others have suggested. Very common in 'fancy' goldfish whose fins are exaggerated. I find it's more noticeable in hyaline (clear) fins such a the dorsal of your young fish.
It is almost certainly not ich and it is most likely scar tissue from fin ray fracture, as others have suggested. Very common in 'fancy' goldfish whose fins are exaggerated. I find it's more noticeable in hyaline (clear) fins such a the dorsal of your young fish.
Does it go away on its own? Do i have to do anything or is it better to leave it alone?