Maybe I need to take him to the petstore, but maybe someone here knows! I picked up my ryukin two days ago and only noticed his white open sore just now. From a google seach it says he might have an ulcer and i need to treat the sore with hydrogen peroxide and then feed him some medi-gold antibiotics. does he need to be quarantined from the tank? i added salt to the fish tank to raise the salt levels, a website also suggested i dip him in inceased salt level tank for 5 min....anyone knows what to do?

here is the video of my ryukin and his sore

http://www.youtube.com/watch?v=ZTuDReStZwo

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2008 E82 135is JB2 Alpine White / Lemon
2008 E90 335i JB2 Monaco Blue/Grey
2007 E85 M Roadster Black/Black
2006 E60 550 w/ M Kit Silver/Black
2003 E46 M3 SMG w/ VMR V715 19's Blue/Black