[richie0610]

i have recently noticed one of my koi approx 10" has a almost clear film of mucus forming along the top of its back.

its feeding and behaving as normal though, any ideas?

[worthy]

Have you tested your water or had a scrape done as fish usually produce more mucus when there is a problem ie parasie or bad water quality

[richie0610]

water quality appears fine, tests all normal, no other fish showing any signs.

could it be that this one fish just appears to have more than usual?

[koimaster]

might be carp pox as the temps are now dropping