i just got goldfish yesterday for my birthday and i've placed him in a proper tank and fed him (well..maybe a bit too much, my dad fed him twice a day) and early this afternoon it started swimming sideways. i googled it and i think he's got the swim bladder disease (but why so quick?). so i changed the water (and also included water ager, the amount that was suggested) but then he started swimming vertically, head up while i was preparing the mushed skinless peas suggested by most sites. tried feeding him those into bailey's (thats his name btw) mouth myself. but i saw i got to see the last piece being held in his mouth for about 30 seconds but then he just hurled them out. then i observed that his breathing have slowed down drastically. i was just signing up for this site when he died. what did i do wrong? pleease helpp ;'(