Taking extreme measures to save my fish

RECENTLY I noticed that the fish in my small pond had starting acting oddly.

They were off their food and spent a lot of time hiding in clumps of weed or crevices in the stones. They alternated this reclusive behaviour with occasionally dashing about in a mad fashion and scraping themselves against hard objects.

Something was obviously wrong so I got down on my knees for a closer look. That’s when I noticed a scattering of tiny white spots on their bodies. It looked as if someone had shaken fine grain salt over them.