Help!!!!!! something is wrong!!!!!! yesterday I looked at him and he was fine, then I went to the beach. 5 and a half hours later, I came home to find almost half of his tail "shredded" there is nothing in his tank that he could have hurt it on. I didn't think it was fin rot, does it normally attack that fast???? also, upon a closer look, the scales on the edges of his gills look paler, almost pink. he is in a heated 1.5 gal, but he is pretty small so he has enough room (for now!) I do regular water changes, and the ph is fine. last night I did a 100% water change and proper dose of aq salt. I want to know if hes in any real danger, and if so, what can I do? PLEASE HELP!!!!!!