check out this stickleback I found:
Does anyone have any idea what disease this is?
It's the only stickleback I caught in that specific pond but I kept it because of the interesting disease and to see if I could cure it!
I have almost no idea about fish diseases but to me it looks too big to be white spot. My best guess in LYMPHOCYSTIS but apparently it's rare in freshwater fish. Admittedly I did find it in ediburgh in a pond about a mile from the sea