Join Date: Feb 2012
Location: Somewhere . . .
BTW, those goldfish are most likely orandas because orandas have dorsal fins and a wen. So don't worry about any tumors.
Also, since orandas are fancy goldfish (not single-tailed), they need at least the minimum 10 gallons per goldfish and at least 10x filter turnover per gallon. In your sister's case, 2x10x10=200 gph.
"Fish should be treated like you would never see them again."
20 gallon betta sorority: Spot,Midnight, Apple, Smokey
Rest in Peace: Glimmer- June 10, 2012