So I have had my halfmoon tale beta Princeton for a few months now. I keep in a 1.5 gallon tank and clean the take every week, doing a 75% water change. I add the correct amount of water conditioner, and aqua salt. I always keep the water at a normal temp. A week or so ago I noticed his tail looked ragged, like tail rot. I added the correct amount of Pimafix. I have been following the directions on the bottle and everything, I even look out Princeton's cave he liked becuase I was afraid it would hurt his tale if he bumped it. I have been giving him the meds for a week or so now, but it seems he is getting worse. He is so incredibly pale and his colors have faded so much! He ate yesterday but today when I went to feed him he did not want to eat. His Ventral Fins that used to be blue are now almost see through! I am terrified I really want him to get better! I do not know what I am doing wrong. Please help!