shua 71 ur fish sounds like it has internal parasites i got some wild broko from a great vendor that i know treated them previous to shipment i have a theory that it may take a couple doses to completely rid some fish of parasites that sunken stomach and no appetite is a dead give away i hate to use meds but salt and heat dosnt allways do the job i used prazipro after one dose my fish came to life started eating regularly again i used the same meds as the vendor i trust it works but i think some fish are affected far worse then others do some research on internal parasites and youll understand what i mean