one of my white clouds started to develope a small bump (1-2mm)on the right side of its body near the stomach area several months ago. i let it go at first hoping the fish might get better on its own because it was eating well and acting normal. it remained relatively small until recently it started getting larger (2mm wide and 2mm protrusion) and now has ruptured the skin. it looks as if the red tissue under the skin is pushing through the wound. the fish sims and acts normal but has little appetite (not surprising). iv'e been treating with antibiotics for a week (erytromicin) with no posative result. any last minute suggestions/posibilities before i euthenize the fish? i searched and googled but wasn't having much luck. theres no visible worms or parasites on or around the wound. and to add the fish is alert and active. colors look good and although it doesnt appear to eat its not looking emaciated so it must be eating.