Feed him nori, spiruulina pellets, shrimp, and basic multi-food. Nothing new in the line of feeding. Added a couple of percs and coral beauty over 2 weeks ago. No picking going on. Total mystery to me. I don't think there is anything I can do. It is as if whatever happened has got him. It must internal I guess. Outside he looks fine except for the skin and bone appearance.
Swimming is not a sport, it is a way to keep from drowning.