IP are most likely the culprit. Follow the directions in this link and your fish should recover. There are specific instructions on what to do if your fish don't eat and what to do after. Good luck.
http://www.monsterfishkeepers.com/forums/showthread.php?339362-Treating-Hexamita-aka-Spironucleus
Cool. I figured that kinda how it would go. Does NLS have any pellets larger than 3mm?
Sent from my iPhone using MonsterAquariaNetwork app