Not sure what this is. This white line /spots are only on one side. Fish behavior is normal including eating. These are the best pics I could take. Fish went through 30 day quarantine and one prazipro treatment. Thank you for your help.
Thank youI would concentrate on a vitamin enriched diet if you are sure carbon and electricity isn’t a problem. I prefer selcon. It is possible to reverse the HLLE over time with a well balanced diet.