Oh my gosh, really!?! She just had fry a few days ago (just less than a week)! On closer inspection, I think she may have a fungus on her tail. It is hard to determine though, because she is clamping her tail (only) a little and she is silver so white is hard to see. None of my other fish seem to have any problems, or fungus for that matter. I don't have room for a hosptial tank, so should I treat the entire 55 gallon tank just to be safe???
~Jade