Hi I have some really resistant flukes they can tolerate hypo salinity and praziquantel and even really dangerous treatments like neguvon. the flukes make some fish scratch and hide for a week they keep scratching their gills and body and their scales fall off and then most likely die. I am really desperate to find a cure that works this disease has been affecting fish I buy for more then two years now. no angel fish or tang can ever live in my tank with this disease but I’ve noticed most wrasses are not really effected by the flukes. If there is anyone here who knows of a cure that has a high chance of working pls reply. Thanks