Hey guys I have this beautifu new yellow tang and I want her to be happy. I just got her and she is scraping pretty frequently but no spots on her fins really look like ich. All I can notice on her is towards her tail the skin seems puffy and white wih a slight velvety appearance. I'm wondering if I should treat this as Ich or go bacterial. Any input? It's so hard to get a pic of this as it can really be seen w the naked eye