My BTA that I purchased around Christmas has been doing spectacular until lately. I last fed a much larger piece of defrosted Orange Roughy than I would normally feed (about the size of 5 quarters stacked) some two to three weeks ago.He seemed to handle it ok, although it took some time for him to get his mouth around it. He proceeded to barf (excrete) several times over the next several days and has since not fully extended or taken any food. He was never agressive about feeding but would always accept food. LOL..my clowns wont have anything to do with him and he seems very sensitive to any touching by anything. (a passive BTA?) I have told a friend that if he wont come around in a week or so I will give it to him rather than see him waste away. Any suggestions? He was so beautiful and happy and settled in my tank. I hate to admit defeat. temp 79, PH 8.1,NO2 0, No3 0, Alk 4.0, SpG, 1.022, Calcium 460,Po4 .1. The only thing I can come up with is SpG low and the buffer I have been adding over the past couple weeks to get my PH up. :(