how long have you had your tangs? does your Ph fluctuate? do you use auto top off? or is your slainity in constant fluctuation? Yous ailfin, sadly to say, will probablynot last more than 48 hours if it is already showing signs of off balance so to speak and not eating. I had one do the same thing not long ago, but I had only had it for two weeks, so it must have already been sick before I aquired it. It started off great, ate well, and all, but two weeks later, he died after shwoing signs like yours.