hey there, thanks for checking up on the little guy. I think it must have been stress, or as above the net from the LFS.
I treated with melafix for 7 days and all is going well. The scales are still missing but looks as though they have started to grow back. The fish is in good shape, eating well. So far have managed to keep any infections at bay. Also keeping up witht the tonic salt.
Stu