My goldfish's tail is curling could it be fin rot :/?

my gold fish also has some white spots on its gills (tail is a little bloody where it curls to) what could this be here's a pic a href="http://i625.photobucket.com/albums/tt336/mandy_lynn101/goldfish.jpg" rel="nofollow"http://i625.photobucket.com/albums/tt336…/a