I have a fantail goldfish. Her name is Wilma and she is over 5 inches long without counting the tail. She is a little overweight and got stuck in my aquarium today and some feeder fish nipped away at her tail and it is blood shot now. She is swimming on her side, upside down, and right side up now. I already put some Melafix fin repair in and romoved all of the feeder goldfish. What else can I do to help my fish?