My orange goldfish with a bubble head suddenly got sick. I flushed him but I am worried about the other goldfish in my tank. This fishs wen looked sunken in and had tons of white stings coming out of it, and this hapened in the span of two days. Its eyes had blood in them, and then wwnt completely white. I flushed the fish but I have 12 others in my 100 gallon tank and I was wondering if anyone knew what this was and if i should do anything to protect my other gold fish. Thanks.